Scientific name — the current valid binomial used on the species page. Common name — English vernacular and trade names. Synonym — an older or alternate binomial (for example the recently resurrected FishBase genus), so a fish is found by whichever name you know. Species still being written resolve their name without a link.
2,434 of 2,434 name entries
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- 7-Ray Tetracommon — Serrapinnus sterbai
A
- Acanthocharax microlepisscientificCharacidae
- Acatlán Tetracommon — Astyanax acatlanensis
- Acestrocephalus acutusscientificCharacidae
- Acestrocephalus anomalusscientificCharacidae
- Acestrocephalus boehlkeiscientificCharacidae
- Acestrocephalus maculosusscientificCharacidae
- Acestrocephalus nigrifasciatusscientificCharacidae
- Acestrocephalus pallidusscientificCharacidae
- Acestrocephalus sardinascientificCharacidae
- Acestrocephalus stigmatusscientificCharacidae
- Acinocheirodon melanogrammascientificCharacidae
- Acrobrycon ipanquianusscientificCharacidae
- Acrobrycon ortiiscientificCharacidae
- Acrobrycon starnesiscientificCharacidae
- Adujai Lizard Tetracommon — Iguanodectes adujai
- African Blue Tetracommon — Alestopetersius bifasciatus
- African longfin tetracommon — Bryconalestes longipinnis
- African Moon Tetracommon — Bathyaethiops caudomaculatus
- African Rainbow Tetracommon — Alestopetersius nigropterus
- African red eye tetracommon — Arnoldichthys spilopterus
- African red-eyed tetracommon — Arnoldichthys spilopterus
- African Spottail Tetracommon — Brachypetersius altus
- African Tetracommon — Micralestes acutidens
- African Tetracommon — Micralestes lualabae
- African Tigerfishcommon — Hydrocynus vittatus
- Akaocommon — Hydrocynus forskahlii
- Akawocommon — Hydrocynus forskahlii
- Albino glowlight tetracommon — Hemigrammus erythrozonus
- Albino neon tetracommon — Paracheirodon innesi
- Albino silver tip tetracommon — Hasemania nana
- Alestes ansorgiiscientificAlestidae
- Alestes baremozescientificAlestidae
- Alestes dentexscientificAlestidae
- Alestes inferusscientificAlestidae
- Alestes liebrechtsiiscientificAlestidae
- Alestes longipinnissynonym — now Bryconalestes longipinnis
- Alestes macrophthalmusscientificAlestidae
- Alestes stuhlmanniiscientificAlestidae
- Alestion rapaxscientificAlestidae
- Alestopetersius bifasciatusscientificAlestidae
- Alestopetersius bleheriscientificAlestidae
- Alestopetersius brichardiscientificAlestidae
- Alestopetersius caudalisscientificAlestidae
- Alestopetersius compressusscientificAlestidae
- Alestopetersius conspectusscientificAlestidae
- Alestopetersius hilgendorfiscientificAlestidae
- Alestopetersius leopoldianusscientificAlestidae
- Alestopetersius nigropterusscientificAlestidae
- Alestopetersius smykalaiscientificAlestidae
- Alestopetersius taeniatusscientificAlestidae
- Alestopetersius tumbensisscientificAlestidae
- Alma Secacommon — Roeboides bussingi
- Altus Tetracommon — Brachypetersius altus
- Amapá tetracommon — Hyphessobrycon amapaensis
- Amapá three-banded flag tetracommon — Hyphessobrycon amapaensis
- Amazon Dog-Tetracommon — Cynopotamus amazonum
- Amazonichthys camelieraescientificCharacidae
- Amazonichthys lindeaescientificCharacidae
- Amazonichthys luscientificCharacidae
- Amblystilbe howesiscientificCharacidae
- American Tetracommon — Moenkhausia costae
- Anai's Tetracommon — Astyanax anai
- Anal Tetracommon — Hemigrammus analis
- Anary Tetracommon — Creagrutus anary
- Andromakhe latensscientificCharacidae
- Andromakhe parisscientificCharacidae
- Andromakhe stenohalinascientificCharacidae
- Andromakhe tupiscientificCharacidae
- Anduze's Pencilfishcommon — Nannostomus anduzei
- Angolan Tetracommon — Brachyalestes humilis
- Ansorge's Tetracommon — Alestes ansorgii
- Aphyocharacidium bolivianumscientificCharacidae
- Aphyocharacidium melandetumscientificCharacidae
- Aphyocharax agassiziiscientificCharacidae
- Aphyocharax alburnussynonym — now Aphyocharax pusillus
- Aphyocharax anisitsiscientificCharacidae
- Aphyocharax colifaxscientificCharacidae
- Aphyocharax dentatusscientificCharacidae
- Aphyocharax erythrurusscientificCharacidae
- Aphyocharax gracilisscientificCharacidae
- Aphyocharax nattereriscientificCharacidae
- Aphyocharax pusillusscientificCharacidae
- Aphyocharax rathbuniscientificCharacidae
- Aphyocharax yekwanaescientificCharacidae
- Aphyocheirodon hemigrammusscientificCharacidae
- Apricot Tetracommon — Dectobrycon armeniacus
- Apure Characincommon — Charax apurensis
- Argopleura chocoensisscientificCharacidae
- Argopleura conventascientificCharacidae
- Argopleura conventussynonym — now Argopleura conventa
- Argopleura diquensisscientificCharacidae
- Argopleura magdalenensisscientificCharacidae
- Arnold's characincommon — Arnoldichthys spilopterus
- Arnold's Tetracommon — Pseudocheirodon arnoldi
- Arnoldichthys spilopterusscientificAlestidae
- Astyanacinus mooriiscientificCharacidae
- Astyanax abramisscientificCharacidae
- Astyanax acatlanensisscientificCharacidae
- Astyanax aeneusscientificCharacidae
- Astyanax allenisynonym — now Psalidodon alleni
- Astyanax altiorscientificCharacidae
- Astyanax altiparanaescientificCharacidae
- Astyanax anaiscientificCharacidae
- Astyanax angustifronsscientificCharacidae
- Astyanax apiakascientificCharacidae
- Astyanax aramburuiscientificCharacidae
- Astyanax argentatusscientificCharacidae
- Astyanax argyrimarginatusscientificCharacidae
- Astyanax asuncionensisscientificCharacidae
- Astyanax atratoensisscientificCharacidae
- Astyanax aurocaudatusscientificCharacidae
- Astyanax bacalarensisscientificCharacidae
- Astyanax bagualscientificCharacidae
- Astyanax baileyiscientificCharacidae
- Astyanax balbussynonym — now Psalidodon balbus
- Astyanax belizianusscientificCharacidae
- Astyanax bifasciatusscientificCharacidae
- Astyanax bimaculatusscientificCharacidae
- Astyanax biotaescientificCharacidae
- Astyanax bockmanniscientificCharacidae
- Astyanax boliviensisscientificCharacidae
- Astyanax bourgetiscientificCharacidae
- Astyanax brachypterygiumscientificCharacidae
- Astyanax bransfordiiscientificCharacidae
- Astyanax brevimanusscientificCharacidae
- Astyanax brevirhinusscientificCharacidae
- Astyanax brucutuscientificCharacidae
- Astyanax caballeroiscientificCharacidae
- Astyanax caucanusscientificCharacidae
- Astyanax chaparaescientificCharacidae
- Astyanax chicoscientificCharacidae
- Astyanax clavitaeniatusscientificCharacidae
- Astyanax cocibolcascientificCharacidae
- Astyanax cordovaescientificCharacidae
- Astyanax correntinussynonym — now Psalidodon correntinus
- Astyanax courensisscientificCharacidae
- Astyanax cremnobatesscientificCharacidae
- Astyanax crenuchoidessynonym — now Psalidodon crenuchoides
- Astyanax cubilhuitzscientificCharacidae
- Astyanax daguaescientificCharacidae
- Astyanax depressirostrisscientificCharacidae
- Astyanax dissensusscientificCharacidae
- Astyanax dissimilisscientificCharacidae
- Astyanax dnophosscientificCharacidae
- Astyanax dorioniscientificCharacidae
- Astyanax douradilhoscientificCharacidae
- Astyanax eigenmanniorumsynonym — now Psalidodon eigenmanniorum
- Astyanax elachylepisscientificCharacidae
- Astyanax emberascientificCharacidae
- Astyanax endyscientificCharacidae
- Astyanax epiagosscientificCharacidae
- Astyanax eremusscientificCharacidae
- Astyanax erythropterussynonym — now Psalidodon erythropterus
- Astyanax fasciatussynonym — now Psalidodon fasciatus
- Astyanax fassliiscientificCharacidae
- Astyanax filiferusscientificCharacidae
- Astyanax finitimusscientificCharacidae
- Astyanax gandhiaescientificCharacidae
- Astyanax gisleniscientificCharacidae
- Astyanax goyacensisscientificCharacidae
- Astyanax goyanensissynonym — now Psalidodon goyanensis
- Astyanax graciliorscientificCharacidae
- Astyanax guaporensissynonym — now Makunaima guaporensis
- Astyanax guaricanascientificCharacidae
- Astyanax gymnodontussynonym — now Psalidodon gymnodontus
- Astyanax gymnogenysscientificCharacidae
- Astyanax hamatussynonym — now Psalidodon hamatus
- Astyanax henseliscientificCharacidae
- Astyanax hermosusscientificCharacidae
- Astyanax integerscientificCharacidae
- Astyanax itascientificCharacidae
- Astyanax jacobinaescientificCharacidae
- Astyanax jacuhiensisscientificCharacidae
- Astyanax jenynsiiscientificCharacidae
- Astyanax jequitinhonhaesynonym — now Psalidodon jequitinhonhae
- Astyanax joaovitoriscientificCharacidae
- Astyanax jordanensisscientificCharacidae
- Astyanax jordaniscientificCharacidae
- Astyanax kalungasynonym — now Psalidodon kalunga
- Astyanax kennedyiscientificCharacidae
- Astyanax keronolepisscientificCharacidae
- Astyanax kompiscientificCharacidae
- Astyanax kullanderiscientificCharacidae
- Astyanax lacustrisscientificCharacidae
- Astyanax laticepssynonym — now Psalidodon laticeps
- Astyanax leoniscientificCharacidae
- Astyanax leonidasscientificCharacidae
- Astyanax leopoldiscientificCharacidae
- Astyanax lineatusscientificCharacidae
- Astyanax longiorscientificCharacidae
- Astyanax longirhinusscientificCharacidae
- Astyanax lorienscientificCharacidae
- Astyanax macalscientificCharacidae
- Astyanax maculisquamisscientificCharacidae
- Astyanax marionaescientificCharacidae
- Astyanax maximusscientificCharacidae
- Astyanax megaspilurascientificCharacidae
- Astyanax mexicanusscientificCharacidae
- Astyanax microlepisscientificCharacidae
- Astyanax microschemosscientificCharacidae
- Astyanax minorscientificCharacidae
- Astyanax multidensscientificCharacidae
- Astyanax myersiscientificCharacidae
- Astyanax nasutusscientificCharacidae
- Astyanax nicaraguensisscientificCharacidae
- Astyanax nobrescientificCharacidae
- Astyanax novaescientificCharacidae
- Astyanax obscurusscientificCharacidae
- Astyanax ocotalscientificCharacidae
- Astyanax ojiarascientificCharacidae
- Astyanax orbignyanusscientificCharacidae
- Astyanax orstediiscientificCharacidae
- Astyanax orthodusscientificCharacidae
- Astyanax pampascientificCharacidae
- Astyanax panamensisscientificCharacidae
- Astyanax paraguayensissynonym — now Astyanax abramis
- Astyanax parahybaesynonym — now Psalidodon parahybae
- Astyanax paranaesynonym — now Psalidodon paranae
- Astyanax paranahybaescientificCharacidae
- Astyanax pardensisscientificCharacidae
- Astyanax pedrisynonym — now Deuterodon pedri
- Astyanax pellegrinisynonym — now Psalidodon pellegrini
- Astyanax pessaliisynonym — now Psalidodon pessalii
- Astyanax petenensisscientificCharacidae
- Astyanax pirabitirascientificCharacidae
- Astyanax pirapuanscientificCharacidae
- Astyanax piraubascientificCharacidae
- Astyanax poetzschkeiscientificCharacidae
- Astyanax powelliscientificCharacidae
- Astyanax procerusscientificCharacidae
- Astyanax pukascientificCharacidae
- Astyanax pynandiscientificCharacidae
- Astyanax rioverdescientificCharacidae
- Astyanax rivularissynonym — now Psalidodon rivularis
- Astyanax robustusscientificCharacidae
- Astyanax ruberrimusscientificCharacidae
- Astyanax rupestrisscientificCharacidae
- Astyanax rupununiscientificCharacidae
- Astyanax rutilussynonym — now Psalidodon rutilus
- Astyanax saguazuscientificCharacidae
- Astyanax saltorscientificCharacidae
- Astyanax salvatorisscientificCharacidae
- Astyanax scabripinnissynonym — now Psalidodon scabripinnis
- Astyanax schubartiscientificCharacidae
- Astyanax scintillansscientificCharacidae
- Astyanax serratusscientificCharacidae
- Astyanax siapaescientificCharacidae
- Astyanax sincorascientificCharacidae
- Astyanax stilbescientificCharacidae
- Astyanax superbusscientificCharacidae
- Astyanax symmetricusscientificCharacidae
- Astyanax tamiahuascientificCharacidae
- Astyanax tarponscientificCharacidae
- Astyanax tehuacanensisscientificCharacidae
- Astyanax togoisynonym — now Psalidodon togoi
- Astyanax totaescientificCharacidae
- Astyanax trierythropterusscientificCharacidae
- Astyanax troyascientificCharacidae
- Astyanax tumbayaensisscientificCharacidae
- Astyanax turmalinensisscientificCharacidae
- Astyanax uberabasynonym — now Psalidodon uberaba
- Astyanax unitaeniatusscientificCharacidae
- Astyanax utiaritiscientificCharacidae
- Astyanax validusscientificCharacidae
- Astyanax variiscientificCharacidae
- Astyanax varzeaescientificCharacidae
- Astyanax venezuelaescientificCharacidae
- Astyanax vermilionscientificCharacidae
- Astyanax villwockiscientificCharacidae
- Astyanax xavantescientificCharacidae
- Astyanax xiruscientificCharacidae
- Astyanax yariguiesscientificCharacidae
- Atlantic Dogfish Characincommon — Oligosarcus hepsetus
- Atopomesus pachyodusscientificCharacidae
- Attonitus bounitesscientificCharacidae
- Attonitus ephimerosscientificCharacidae
- Attonitus irisaescientificCharacidae
- Aulixidens eugeniaescientificCharacidae
- Aurora Tetracommon — Moenkhausia aurora
- Axelrod's Tetracommon — Hyphessobrycon axelrodi
- Axelrodia rieseiscientificCharacidae
- Axelrodia stigmatiasscientificCharacidae
B
- Baka Tetracommon — Bathyaethiops baka
- Banded African Tetracommon — Alestopetersius taeniatus
- Banded Alestescommon — Brachyalestes taeniurus
- Banded astyanaxcommon — Astyanax bimaculatus
- Banded astyanaxcommon — Psalidodon fasciatus
- Banded Pyrrhulinacommon — Pyrrhulina vittata
- Banded Tetracommon — Astyanax aeneus
- Banded tetracommon — Hollandichthys multifasciatus
- Banded tetracommon — Psalidodon fasciatus
- Bandtail Tetracommon — Hemibrycon taeniurus
- Bandtail tetracommon — Moenkhausia dichroura
- Barber's tetracommon — Mimagoniates barberi
- Bareback tetracommon — Gephyrocharax atracaudatus
- Bario australisscientificCharacidae
- Bario cosmopscommon — Moenkhausia cosmops
- Bario cosmopssynonym — now Moenkhausia cosmops
- Bario forestiisynonym — now Moenkhausia forestii
- Bario oligolepisscientificCharacidae
- Bario sanctaefilomenaescientificCharacidae
- Bario skolioplatusscientificCharacidae
- Bario steindachneriscientificCharacidae
- Bario uirapurusynonym — now Moenkhausia uirapuru
- Barnard's Robbercommon — Rhabdalestes barnardi
- Barred pencilfishcommon — Nannostomus espei
- Barrigona Tetracommon — Hemigrammus barrigonae
- Bassam characincommon — Hemigrammus marginatus
- Bassam tetracommon — Hemigrammus marginatus
- Bathyaethiops atercrinisscientificAlestidae
- Bathyaethiops bakascientificAlestidae
- Bathyaethiops breuseghemiscientificAlestidae
- Bathyaethiops caudomaculatusscientificAlestidae
- Bathyaethiops flammeusscientificAlestidae
- Bathyaethiops greeniscientificAlestidae
- Batiawucommon — Moenkhausia bellasomniosa
- Bayano Tetracommon — Eretmobrycon bayano
- Beacon Tetracommon — Holopristis ocellifera
- Beautiful Croaking Tetracommon — Mimagoniates pulcher
- Beckford's Pencilfishcommon — Nannostomus beckfordi
- Belgian Flag Tetracommon — Hyphessobrycon heterorhabdus
- Belizean Tetracommon — Astyanax belizianus
- Bellotti's Tetracommon — Hemigrammus bellottii
- Beni Tetracommon — Hemibrycon beni
- Benny Tetracommon — Creagrutus beni
- Bentos Tetracommon — Hyphessobrycon bentosi
- Big-eyed Tetracommon — Knodus megalops
- Bigeye tetracommon — Alestes macrophthalmus
- Bigscale Moenkhausiacommon — Moenkhausia grandisquamis
- Black Arrow Tetracommon — Inpaichthys luizae
- Black Charaxcommon — Charax niger
- Black Chin Tetracommon — Piabucus melanostoma
- Black emperor tetracommon — Nematobrycon palmeri
- Black Neon Tetracommon — Hyphessobrycon herbertaxelrodi
- Black Phantom Tetracommon — Megalamphodus megalopterus
- Black skirt tetracommon — Gymnocorymbus ternetzi
- Black tetracommon — Gymnocorymbus ternetzi
- Black Tetracommon — Hyphessobrycon niger
- Black Wedge Tetracommon — Hemigrammus pulcher
- Black widow tetracommon — Gymnocorymbus ternetzi
- Black-band Tetracommon — Hasemania melanura
- Black-line Tetracommon — Hyphessobrycon scholzei
- Black-spotted Lebiasinacommon — Lebiasina melanoguttata
- Black-wedge tetracommon — Thayeria boehlkei
- Black-wing hatchetfishcommon — Carnegiella marthae
- Black-winged hatchetfishcommon — Carnegiella marthae
- Blackedge Tetracommon — Tyttocharax madeirae
- Blackline penguinfishcommon — Thayeria obliqua
- Blackline Tail Tetracommon — Moenkhausia costae
- Blackline Tetracommon — Acinocheirodon melanogramma
- Blackline Tetracommon — Aphyocharacidium melandetum
- Blackline Tetracommon — Serrapinnus notomelas
- Blacktail Bryconopscommon — Bryconops colanegra
- Blackwing hatchetfishcommon — Carnegiella marthae
- Bleeding Blue Tetracommon — Hyphessobrycon margitae
- Bleeding Heart Tetracommon — Megalamphodus erythrostigma
- Bleeding Heart Tetra variantcommon — Hyphessobrycon pyrrhonotus
- Bleeding-heart Tetracommon — Megalamphodus erythrostigma
- Bleher's rummynosecommon — Petitella bleheri
- Bleher's Tetracommon — Alestopetersius bleheri
- Blind cave tetracommon — Astyanax jordani
- Blind cave tetracommon — Astyanax mexicanus
- Blind cave tetra (Minas Gerais)common — Stygichthys typhlops
- Blind cavefishcommon — Astyanax jordani
- Blind cavefishcommon — Astyanax mexicanus
- Blood Red Tetracommon — Brittanichthys axelrodi
- Blood Tetracommon — Megalamphodus eques
- Bloodfin tetracommon — Aphyocharax anisitsi
- Blue black-banded tetracommon — Hyphessobrycon melanostichos
- Blue croaking tetracommon — Mimagoniates lateralis
- Blue Diamond Tetracommon — Alestopetersius smykalai
- Blue Emperor Tetracommon — Inpaichthys kerri
- Blue Eye Red Lip Kogal Tetracommon — Moenkhausia cosmops
- Blue Glass Tetracommon — Paragoniates alburnus
- Blue Lapis Tetracommon — Hyphessobrycon cyanotaenia
- Blue Spot African Tetracommon — Brycinus poptae
- Blue Tetracommon — Boehlkea fredcochui
- Blue Tetracommon — Hemigrammus coeruleus
- Blue Tetracommon — Knodus borki
- Blue Tigerfishcommon — Hydrocynus tanzaniae
- Blueberry Tetracommon — Hyphessobrycon wadai
- Blunt-toothed African Tiger Fishcommon — Hydrocynus brevis
- Bocachicocommon — Oligosarcus hepsetus
- Bocarracommon — Oligosarcus argenteus
- Bockmann's Astyanaxcommon — Astyanax bockmanni
- Boehlkea fredcochuiscientificCharacidae
- Boehlkea weitzmaniscientificCharacidae
- Boesman's Tetracommon — Hemigrammus boesemani
- Bonita Tetracommon — Moenkhausia bonita
- Bouchelle's Roeboidescommon — Roeboides bouchellei
- Boulenger's Featherfin Tetracommon — Bryconaethiops boulengeri
- Brachyalestes abeliscientificAlestidae
- Brachyalestes affinisscientificAlestidae
- Brachyalestes bimaculatusscientificAlestidae
- Brachyalestes carolinaescientificAlestidae
- Brachyalestes comptusscientificAlestidae
- Brachyalestes epuluensisscientificAlestidae
- Brachyalestes feroxscientificAlestidae
- Brachyalestes fwaensisscientificAlestidae
- Brachyalestes humilisscientificAlestidae
- Brachyalestes imberiscientificAlestidae
- Brachyalestes jackiaescientificAlestidae
- Brachyalestes jacksoniiscientificAlestidae
- Brachyalestes kingsleyaescientificAlestidae
- Brachyalestes lateralisscientificAlestidae
- Brachyalestes minutusscientificAlestidae
- Brachyalestes nigricaudascientificAlestidae
- Brachyalestes nursescientificAlestidae
- Brachyalestes opisthotaeniascientificAlestidae
- Brachyalestes peringueyiscientificAlestidae
- Brachyalestes sadleriscientificAlestidae
- Brachyalestes taeniurusscientificAlestidae
- Brachychalcinus copeiscientificCharacidae
- Brachychalcinus nummusscientificCharacidae
- Brachychalcinus orbicularisscientificCharacidae
- Brachychalcinus parnaibaescientificCharacidae
- Brachychalcinus reisiscientificCharacidae
- Brachychalcinus retrospinascientificCharacidae
- Brachychalcinus sabajiscientificCharacidae
- Brachypetersius altusscientificAlestidae
- Brachypetersius cadwaladeriscientificAlestidae
- Brachypetersius gabonensisscientificAlestidae
- Brachypetersius hulotiscientificAlestidae
- Brachypetersius notospilussynonym — now Clavocharax notospilus
- Brachypetersius pseudonummiferscientificAlestidae
- Branquinhacommon — Bryconamericus loisae
- Brass Tetracommon — Tetragonopterus chalceus
- Brazilian blind characidcommon — Stygichthys typhlops
- Bream Tetracommon — Astyanax abramis
- Brichard's Tetracommon — Alestopetersius brichardi
- Brilliant rummy-nose tetracommon — Petitella bleheri
- Brilliant rummynose tetracommon — Petitella bleheri
- brinconcitacommon — Gephyrocharax melanocheir
- Brittanichthys axelrodiscientificCharacidae
- Brittanichthys myersiscientificCharacidae
- Broken-Line Tetracommon — Hemigrammus ulreyi
- Brown Pencilfishcommon — Nannostomus beckfordi
- Brown Pencilfishcommon — Nannostomus eques
- Brown-tailed Pencilfishcommon — Nannostomus eques
- Brown's Moenkhausiacommon — Moenkhausia browni
- Brycinus batesiiscientificAlestidae
- Brycinus brevisscientificAlestidae
- Brycinus carmesinusscientificAlestidae
- Brycinus grandisquamisscientificAlestidae
- Brycinus leuciscusscientificAlestidae
- Brycinus longipinnissynonym — now Bryconalestes longipinnis
- Brycinus luteusscientificAlestidae
- Brycinus macrolepidotusscientificAlestidae
- Brycinus poptaescientificAlestidae
- Brycinus rhodopleurascientificAlestidae
- Brycinus schoutedeniscientificAlestidae
- Bryconacidnus ellisaesynonym — now Bryconacidnus ellisi
- Bryconacidnus ellisiscientificCharacidae
- Bryconacidnus hemigrammusscientificCharacidae
- Bryconacidnus paipayensisscientificCharacidae
- Bryconaethiops boulengeriscientificAlestidae
- Bryconaethiops macropsscientificAlestidae
- Bryconaethiops microstomascientificAlestidae
- Bryconaethiops quinquesquamaescientificAlestidae
- Bryconaethiops yseuxiscientificAlestidae
- Bryconalestes bartoniscientificAlestidae
- Bryconalestes derhamiscientificAlestidae
- Bryconalestes intermediusscientificAlestidae
- Bryconalestes longipinnisscientificAlestidae
- Bryconalestes tessmanniscientificAlestidae
- Bryconalestes tholloniscientificAlestidae
- Bryconamericus agnascientificCharacidae
- Bryconamericus alfredaescientificCharacidae
- Bryconamericus andresoiscientificCharacidae
- Bryconamericus arilepisscientificCharacidae
- Bryconamericus bolivianusscientificCharacidae
- Bryconamericus brevirostrissynonym — now Eretmobrycon brevirostris
- Bryconamericus bucayensisscientificCharacidae
- Bryconamericus caldasiscientificCharacidae
- Bryconamericus carlosiscientificCharacidae
- Bryconamericus caucanusscientificCharacidae
- Bryconamericus charalaescientificCharacidae
- Bryconamericus cinarucoensescientificCharacidae
- Bryconamericus cismontanusscientificCharacidae
- Bryconamericus coeruleusscientificCharacidae
- Bryconamericus cristianiscientificCharacidae
- Bryconamericus dahliscientificCharacidae
- Bryconamericus deuterodonoidesscientificCharacidae
- Bryconamericus diaphanussynonym — now Knodus diaphanus
- Bryconamericus ecaiscientificCharacidae
- Bryconamericus ecuadorensisscientificCharacidae
- Bryconamericus eigenmanniscientificCharacidae
- Bryconamericus emperadorsynonym — now Eretmobrycon emperador
- Bryconamericus exodonscientificCharacidae
- Bryconamericus foncensisscientificCharacidae
- Bryconamericus galvisiscientificCharacidae
- Bryconamericus gonzalezisynonym — now Eretmobrycon gonzalezoi
- Bryconamericus grosvenoriscientificCharacidae
- Bryconamericus guaytaraesynonym — now Eretmobrycon guaytarae
- Bryconamericus guizaescientificCharacidae
- Bryconamericus guyanensisscientificCharacidae
- Bryconamericus huilaescientificCharacidae
- Bryconamericus hyphessonscientificCharacidae
- Bryconamericus icelusscientificCharacidae
- Bryconamericus ichoensisscientificCharacidae
- Bryconamericus iheringiiscientificCharacidae
- Bryconamericus ikaascientificCharacidae
- Bryconamericus indefessusscientificCharacidae
- Bryconamericus lambariscientificCharacidae
- Bryconamericus lassorumscientificCharacidae
- Bryconamericus loisaescientificCharacidae
- Bryconamericus macarenaescientificCharacidae
- Bryconamericus macrophthalmusscientificCharacidae
- Bryconamericus megalepisscientificCharacidae
- Bryconamericus menniiscientificCharacidae
- Bryconamericus microcephalusscientificCharacidae
- Bryconamericus miraensisscientificCharacidae
- Bryconamericus miseiscientificCharacidae
- Bryconamericus motatanensissynonym — now Knodus motatanensis
- Bryconamericus multiradiatusscientificCharacidae
- Bryconamericus novaescientificCharacidae
- Bryconamericus orinocoensisscientificCharacidae
- Bryconamericus ornaticepsscientificCharacidae
- Bryconamericus oroensisscientificCharacidae
- Bryconamericus osgoodiscientificCharacidae
- Bryconamericus pachacutiscientificCharacidae
- Bryconamericus patriciaescientificCharacidae
- Bryconamericus pectinatusscientificCharacidae
- Bryconamericus peruanussynonym — now Eretmobrycon peruanus
- Bryconamericus phoenicopterusscientificCharacidae
- Bryconamericus pinnavittatusscientificCharacidae
- Bryconamericus plutarcoiscientificCharacidae
- Bryconamericus poiscientificCharacidae
- Bryconamericus pyahuscientificCharacidae
- Bryconamericus rubropictusscientificCharacidae
- Bryconamericus scleropariussynonym — now Eretmobrycon scleroparius
- Bryconamericus simussynonym — now Eretmobrycon simus
- Bryconamericus singularisscientificCharacidae
- Bryconamericus stramineusscientificCharacidae
- Bryconamericus subtilisformscientificCharacidae
- Bryconamericus sylvicolascientificCharacidae
- Bryconamericus tenuisscientificCharacidae
- Bryconamericus ternetziscientificCharacidae
- Bryconamericus terrabensisscientificCharacidae
- Bryconamericus thomasiscientificCharacidae
- Bryconamericus tolimaescientificCharacidae
- Bryconamericus turiubascientificCharacidae
- Bryconamericus uporasscientificCharacidae
- Bryconamericus yokiaescientificCharacidae
- Bryconamericus ytuscientificCharacidae
- Bryconamericus zamorensisscientificCharacidae
- Bryconamericus zetekiscientificCharacidae
- Bryconella pallidifronsscientificCharacidae
- Bryconella Tetracommon — Bryconella pallidifrons
- Bryconexodon juruenaescientificCharacidae
- Bryconexodon trombetasiscientificCharacidae
- Bryconops affinisscientificIguanodectidae
- Bryconops alburnoidesscientificIguanodectidae
- Bryconops caudomaculatusscientificIguanodectidae
- Bryconops colanegrascientificIguanodectidae
- Bryconops colarojascientificIguanodectidae
- Bryconops colletteiscientificIguanodectidae
- Bryconops cyrtogasterscientificIguanodectidae
- Bryconops disruptusscientificIguanodectidae
- Bryconops durbinaesynonym — now Bryconops durbini
- Bryconops durbiniscientificIguanodectidae
- Bryconops giacopiniiscientificIguanodectidae
- Bryconops gracilisscientificIguanodectidae
- Bryconops humeralisscientificIguanodectidae
- Bryconops imitatorscientificIguanodectidae
- Bryconops inpaiscientificIguanodectidae
- Bryconops magoiscientificIguanodectidae
- Bryconops melanurusscientificIguanodectidae
- Bryconops mundurukuscientificIguanodectidae
- Bryconops piracolinascientificIguanodectidae
- Bryconops tocantinensisscientificIguanodectidae
- Bryconops transitoriasynonym — now Bryconops transitorius
- Bryconops transitoriusscientificIguanodectidae
- Bryconops vibexscientificIguanodectidae
- Bucktooth characincommon — Exodon paradoxus
- Bucktooth tetracommon — Exodon paradoxus
- Buenos Aires Tetracommon — Psalidodon anisitsi
- Bull-headed Tetracommon — Hyphessobrycon taurocephalus
- Bussing's Tetracommon — Roeboides bussingi
- Butterfly tetracommon — Gymnocorymbus ternetzi
C
- cachanacommon — Cynopotamus atratoensis
- cachuelacommon — Eretmobrycon brevirostris
- Cacundacommon — Charax michaeli
- Caiapobrycon tucuruiscientificCharacidae
- Callistus Tetracommon — Megalamphodus eques
- Cardinal tetracommon — Paracheirodon axelrodi
- Carlana eigenmanniscientificCharacidae
- Carnegiella marthaescientificGasteropelecidae
- Carnegiella myersiscientificGasteropelecidae
- Carnegiella schereriscientificGasteropelecidae
- Carnegiella strigatascientificGasteropelecidae
- Cauca Tetracommon — Astyanax caucanus
- cazuelacommon — Eretmobrycon brevirostris
- Central American Tetracommon — Astyanax aeneus
- Central American Tetracommon — Astyanax orstedii
- Ceratobranchia binghamiscientificCharacidae
- Ceratobranchia delotaeniascientificCharacidae
- Ceratobranchia elatiorscientificCharacidae
- Ceratobranchia joanaescientificCharacidae
- Ceratobranchia obtusirostrisscientificCharacidae
- Changeable Tetracommon — Hyphessobrycon mutabilis
- Changuitocommon — Roeboides bussingi
- Chapare Tetracommon — Astyanax chaparae
- Charax apurensisscientificCharacidae
- Charax awascientificCharacidae
- Charax caudimaculatusscientificCharacidae
- Charax condeiscientificCharacidae
- Charax delimaiscientificCharacidae
- Charax gibbosusscientificCharacidae
- Charax hemigrammusscientificCharacidae
- Charax leticiaescientificCharacidae
- Charax macrolepisscientificCharacidae
- Charax metaescientificCharacidae
- Charax michaeliscientificCharacidae
- Charax nigerscientificCharacidae
- Charax notulatusscientificCharacidae
- Charax pauciradiatusscientificCharacidae
- Charax rupununiscientificCharacidae
- Charax stenopterusscientificCharacidae
- Charax tectiferscientificCharacidae
- Charax unimaculatusscientificCharacidae
- Cheirodon australescientificCharacidae
- Cheirodon galusdaescientificCharacidae
- Cheirodon ibicuhiensisscientificCharacidae
- Cheirodon interruptusscientificCharacidae
- Cheirodon jaguaribensisscientificCharacidae
- Cheirodon kilianiscientificCharacidae
- Cheirodon luelingiscientificCharacidae
- Cheirodon ortegaiscientificCharacidae
- Cheirodon parahybaescientificCharacidae
- Cheirodon pisciculusscientificCharacidae
- Cheirodon stenodonscientificCharacidae
- Cheirodon tetracommon — Cheirodon interruptus
- Cheirodontops geayiscientificCharacidae
- Cherryfin Tetracommon — Rachoviscus crassiceps
- Chilean Tetracommon — Cheirodon pisciculus
- Chin Tetracommon — Piabucus dentatus
- Chin Tetracommon — Piabucus melanostoma
- Chispa-totacommon — Creagrutus nigrostigmatus
- Chocó Rainbow Characincommon — Rhoadsia minor
- Chocolate Neon Tetracommon — Hyphessobrycon vilmae
- Chrysobrycon calamarscientificCharacidae
- Chrysobrycon eliasiscientificCharacidae
- Chrysobrycon guahiboscientificCharacidae
- Chrysobrycon hesperusscientificCharacidae
- Chrysobrycon myersiscientificCharacidae
- Chrysobrycon yoliaescientificCharacidae
- Cigar-shaped Tetracommon — Hemigrammus cylindricus
- Citrina Tetracommon — Jupiaba citrina
- Citrus Tetracommon — Hyphessobrycon citrus
- Clavocharax notospilusscientificAlestidae
- Clupeocharax schoutedeniscientificAlestidae
- Cocha Tetracommon — Grundulus cochae
- Cochu's Blue Tetracommon — Boehlkea fredcochui
- Cochu's Tetracommon — Tyttocharax cochui
- Cocibolca Tetracommon — Astyanax nasutus
- Coffee-bean tetracommon — Hyphessobrycon takasei
- Collett's Tetracommon — Hemigrammus collettii
- Colombian Gold Tetracommon — Hyphessobrycon saizi
- Colombian Hemibryconcommon — Hemibrycon colombianus
- Colombian tetracommon — Hyphessobrycon columbianus
- Common Hatchetfishcommon — Gasteropelecus sternicla
- Compressed Tetracommon — Poptella compressa
- Compsura gorgonaescientificCharacidae
- Compsura heterurascientificCharacidae
- Congo salmoncommon — Phenacogrammus interruptus
- Congo tetracommon — Phenacogrammus interruptus
- Cope's Disc Tetracommon — Brachychalcinus copei
- Cope's Glass Tetracommon — Charax stenopterus
- Cope's Tetracommon — Hemigrammus copei
- Copeina guttatascientificLebiasinidae
- Copeina osgoodiscientificLebiasinidae
- Copeland's Tetracommon — Hyphessobrycon copelandi
- Copella arnoldiscientificLebiasinidae
- Copella callolepisscientificLebiasinidae
- Copella comptascientificLebiasinidae
- Copella eigenmanniscientificLebiasinidae
- Copella nattereriscientificLebiasinidae
- Copella vilmaescientificLebiasinidae
- Copper Tetracommon — Hasemania nana
- Copper Tetracommon — Hemigrammopetersius pulcher
- Coptobrycon bilineatusscientificCharacidae
- Coral Red Pencilfishcommon — Nannostomus mortenthaleri
- Córdoba Tetracommon — Astyanax cordovae
- Corynopoma riiseiscientificCharacidae
- Costello Tetracommon — Hemigrammus hyanuary
- Creagrutus affinisscientificCharacidae
- Creagrutus amoenusscientificCharacidae
- Creagrutus anaryscientificCharacidae
- Creagrutus atratusscientificCharacidae
- Creagrutus atrisignumscientificCharacidae
- Creagrutus barrigaiscientificCharacidae
- Creagrutus beniscientificCharacidae
- Creagrutus bolivariscientificCharacidae
- Creagrutus brevipinnisscientificCharacidae
- Creagrutus britskiiscientificCharacidae
- Creagrutus calaiscientificCharacidae
- Creagrutus caucanusscientificCharacidae
- Creagrutus cerritulusscientificCharacidae
- Creagrutus changaescientificCharacidae
- Creagrutus cochuiscientificCharacidae
- Creagrutus cracentisscientificCharacidae
- Creagrutus crenatusscientificCharacidae
- Creagrutus ephippiatusscientificCharacidae
- Creagrutus figueiredoiscientificCharacidae
- Creagrutus flavescensscientificCharacidae
- Creagrutus gephyrusscientificCharacidae
- Creagrutus gracilisscientificCharacidae
- Creagrutus guanesscientificCharacidae
- Creagrutus gyrospilusscientificCharacidae
- Creagrutus hildebrandiscientificCharacidae
- Creagrutus holmiscientificCharacidae
- Creagrutus hysginusscientificCharacidae
- Creagrutus ignotusscientificCharacidae
- Creagrutus kunturusscientificCharacidae
- Creagrutus lassoiscientificCharacidae
- Creagrutus lepidusscientificCharacidae
- Creagrutus machadoiscientificCharacidae
- Creagrutus maculosusscientificCharacidae
- Creagrutus magdalenaescientificCharacidae
- Creagrutus magoiscientificCharacidae
- Creagrutus manuscientificCharacidae
- Creagrutus maracaiboensisscientificCharacidae
- Creagrutus maxillarisscientificCharacidae
- Creagrutus melanzonusscientificCharacidae
- Creagrutus melasmascientificCharacidae
- Creagrutus menezesiscientificCharacidae
- Creagrutus meridionalisscientificCharacidae
- Creagrutus molinusscientificCharacidae
- Creagrutus mucipuscientificCharacidae
- Creagrutus muelleriscientificCharacidae
- Creagrutus nigrostigmatusscientificCharacidae
- Creagrutus nigrotaeniatusscientificCharacidae
- Creagrutus occidaneusscientificCharacidae
- Creagrutus ortegaiscientificCharacidae
- Creagrutus ouranonastesscientificCharacidae
- Creagrutus paraguayensisscientificCharacidae
- Creagrutus paralacusscientificCharacidae
- Creagrutus pearsoniscientificCharacidae
- Creagrutus peruanusscientificCharacidae
- Creagrutus petilusscientificCharacidae
- Creagrutus phasmascientificCharacidae
- Creagrutus pilascientificCharacidae
- Creagrutus planquetteiscientificCharacidae
- Creagrutus provenzanoiscientificCharacidae
- Creagrutus runascientificCharacidae
- Creagrutus saxatilisscientificCharacidae
- Creagrutus seductusscientificCharacidae
- Creagrutus taphorniscientificCharacidae
- Creagrutus tuyukascientificCharacidae
- Creagrutus ungulusscientificCharacidae
- Creagrutus variiscientificCharacidae
- Creagrutus veruinascientificCharacidae
- Creagrutus vexillapinnusscientificCharacidae
- Creagrutus xiphosscientificCharacidae
- Creagrutus yanatiliscientificCharacidae
- Creagrutus yudjascientificCharacidae
- Creagrutus zephyrusscientificCharacidae
- Creole Astyanaxcommon — Astyanax angustifrons
- Crescent Tetracommon — Hemigrammus lunatus
- Croaking tetracommon — Mimagoniates barberi
- Croaking tetracommon — Mimagoniates inequalis
- Croaking tetracommon — Mimagoniates lateralis
- Croaking Tetracommon — Mimagoniates microlepis
- Crystal Red Tetracommon — Hyphessobrycon haraldschultzi
- Crystal tetracommon — Roeboides bouchellei
- Ctenobrycon hauxwellianusscientificCharacidae
- Ctenobrycon kennedyiscientificCharacidae
- Ctenobrycon magdalenaescientificCharacidae
- Ctenobrycon multiradiatusscientificCharacidae
- Ctenobrycon oliveraiscientificCharacidae
- Ctenobrycon spilurusscientificCharacidae
- Ctenocheirodon pristisscientificCharacidae
- Cubilhuitz Tetracommon — Astyanax cubilhuitz
- Cyanogaster geisleriscientificCharacidae
- Cyanogaster noctivagascientificCharacidae
- Cylindrical Hemigrammuscommon — Hemigrammus cylindricus
- Cynopotamus amazonumscientificCharacidae
- Cynopotamus argenteusscientificCharacidae
- Cynopotamus atratoensisscientificCharacidae
- Cynopotamus bipunctatusscientificCharacidae
- Cynopotamus essequibensisscientificCharacidae
- Cynopotamus gouldingiscientificCharacidae
- Cynopotamus juruenaescientificCharacidae
- Cynopotamus kincaidiscientificCharacidae
- Cynopotamus magdalenaescientificCharacidae
- Cynopotamus tocantinensisscientificCharacidae
- Cynopotamus venezuelaescientificCharacidae
- Cynopotamus xinguanoscientificCharacidae
D
- Darien Tetracommon — Hemibrycon dariensis
- Dawn Tetracommon — Hyphessobrycon eos
- Day's Glass Characincommon — Roeboides dayi
- Dectobrycon armeniacusscientificCharacidae
- Dentex Characincommon — Alestes dentex
- Derhamia hoffmannorumscientificLebiasinidae
- Deuterodon burgeraiscientificCharacidae
- Deuterodon gitonscientificCharacidae
- Deuterodon hamatilisscientificCharacidae
- Deuterodon hastatusscientificCharacidae
- Deuterodon heterostomusscientificCharacidae
- Deuterodon iguapescientificCharacidae
- Deuterodon intermediusscientificCharacidae
- Deuterodon janeiroensisscientificCharacidae
- Deuterodon langeiscientificCharacidae
- Deuterodon longirostrisscientificCharacidae
- Deuterodon luetkeniiscientificCharacidae
- Deuterodon mutatorscientificCharacidae
- Deuterodon oyakawaiscientificCharacidae
- Deuterodon parahybaescientificCharacidae
- Deuterodon pedriscientificCharacidae
- Deuterodon potaroensisscientificCharacidae
- Deuterodon ribeiraescientificCharacidae
- Deuterodon rosaescientificCharacidae
- Deuterodon sazimaiscientificCharacidae
- Deuterodon singularisscientificCharacidae
- Deuterodon stigmaturusscientificCharacidae
- Deuterodon supparisscientificCharacidae
- Deuterodon taeniatusscientificCharacidae
- Diamantina Tetracommon — Moenkhausia diamantina
- Diamond characincommon — Moenkhausia pittieri
- Diamond tetracommon — Moenkhausia pittieri
- Diamond Tetra (regional)common — Tetragonopterus chalceus
- Diapoma alburnumsynonym — now Diapoma alburnus
- Diapoma alburnusscientificCharacidae
- Diapoma alegretensescientificCharacidae
- Diapoma dicropotamicumscientificCharacidae
- Diapoma dicropotamicussynonym — now Diapoma dicropotamicum
- Diapoma guaraniscientificCharacidae
- Diapoma itaimbescientificCharacidae
- Diapoma lepiclastumscientificCharacidae
- Diapoma nandiscientificCharacidae
- Diapoma obiscientificCharacidae
- Diapoma pyrrhopteryxscientificCharacidae
- Diapoma speculiferumscientificCharacidae
- Diapoma terofaliscientificCharacidae
- Diapoma thaumascientificCharacidae
- Diapoma tipiaiascientificCharacidae
- Diapoma uruguayensescientificCharacidae
- Dientonitocommon — Roeboides dientonito
- Diptail Pencilfishcommon — Nannostomus eques
- Discus Tetracommon — Brachychalcinus orbicularis
- Double longfin neon tetracommon — Paracheirodon innesi
- Dragon fin tetracommon — Pseudocorynopoma doriae
- Dragonfin tetracommon — Pseudocorynopoma doriae
- Durbin's Tetracommon — Hemigrammus analis
- Dwarf Hatchetfishcommon — Carnegiella schereri
- Dwarf Lake Turkana Robbercommon — Brachyalestes minutus
- Dwarf Moon Tetracommon — Bathyaethiops baka
- Dwarf Pencilfishcommon — Nannostomus anduzei
- Dwarf pencilfishcommon — Nannostomus marginatus
- Dwarf Pyrrhulinacommon — Pyrrhulina brevis
- Dwarf Tetracommon — Hyphessobrycon minimus
E
- Ectrepopterus uruguayensisscientificCharacidae
- Ecuador Tetracommon — Hyphessobrycon ecuadorensis
- Ecuador Tetracommon — Hyphessobrycon ecuadoriensis
- Eigenmann's Copellacommon — Copella eigenmanni
- Eigenmann's Pike Tetracommon — Carlana eigenmanni
- Eilyos Tetracommon — Hyphessobrycon eilyos
- Elegant Pencilfishcommon — Nannostomus limatus
- Elegant Tetracommon — Hemigrammus elegans
- Elongate Tigerfishcommon — Hydrocynus forskahlii
- Ely's Tetracommon — Hyphessobrycon eilyos
- Ember tetracommon — Hyphessobrycon amandae
- Emerald Green Tetracommon — Hyphessobrycon comodoro
- Emperor Characincommon — Eretmobrycon emperador
- Emperor Tetracommon — Eretmobrycon emperador
- Emperor tetracommon — Nematobrycon palmeri
- Equatorial Astyanaxcommon — Astyanax integer
- Eretmobrycon bayanoscientificCharacidae
- Eretmobrycon brevirostrisscientificCharacidae
- Eretmobrycon emperadorscientificCharacidae
- Eretmobrycon festaescientificCharacidae
- Eretmobrycon gonzalezoiscientificCharacidae
- Eretmobrycon guaytaraescientificCharacidae
- Eretmobrycon peruanusscientificCharacidae
- Eretmobrycon scleropariusscientificCharacidae
- Eretmobrycon simusscientificCharacidae
- Erythrocharax altipinnisscientificCharacidae
- Espe's pencilfishcommon — Nannostomus espei
- Exclamation Mark Tetracommon — Bryconella pallidifrons
- Exodon paradoxusscientificCharacidae
F
- Falscher Rotflossensalmlercommon — Aphyocharax dentatus
- false black tetracommon — Gymnocorymbus thayeri
- False neon tetracommon — Paracheirodon simulans
- False rummy-nose tetracommon — Hemigrammus levis
- False rummy-nose tetracommon — Petitella georgiae
- False Rummynose Tetracommon — Parapristella georgiae
- False rummynose tetracommon — Petitella georgiae
- False X-ray Tetracommon — Hyphessobrycon simulatus
- Farlowella Tetracommon — Aphyocharax pusillus
- Featherfin Characincommon — Hemigrammus unilineatus
- Featherfin Tetracommon — Hemigrammus unilineatus
- Festa's Lebiasinacommon — Lebiasina festae
- Filament Pyrrhulinacommon — Pyrrhulina filamentosa
- Fire tetracommon — Hyphessobrycon amandae
- Fire-eye Tetracommon — Ramirezella pyrophthalma
- Fireback Tetracommon — Hyphessobrycon pyrrhonotus
- Firefin Tetracommon — Hyphessobrycon igneus
- Firehead tetracommon — Petitella bleheri
- Flag Tetracommon — Hyphessobrycon heterorhabdus
- Flame tetracommon — Hyphessobrycon flammeus
- Flametail tetracommon — Aphyocharax erythrurus
- Forest Croaking Tetracommon — Mimagoniates sylvicola
- Franke's Tetracommon — Hyphessobrycon frankei
G
- Galeocharax guloscientificCharacidae
- Galeocharax humeralisscientificCharacidae
- Galeocharax kneriisynonym — now Galeocharax gulo
- galochacommon — Argopleura conventa
- Garnet Tetracommon — Hemigrammus pulcher
- Gasteropelecus levisscientificGasteropelecidae
- Gasteropelecus maculatusscientificGasteropelecidae
- Gasteropelecus sterniclascientificGasteropelecidae
- Georgett's Tetracommon — Hyphessobrycon georgettae
- Georgia tetracommon — Petitella georgiae
- Georgia's Tetracommon — Parapristella georgiae
- Gephyrocharax atracaudatusscientificCharacidae
- Gephyrocharax caucanusscientificCharacidae
- Gephyrocharax chaparaescientificCharacidae
- Gephyrocharax chocoensisscientificCharacidae
- Gephyrocharax intermediusscientificCharacidae
- Gephyrocharax majorscientificCharacidae
- Gephyrocharax martaescientificCharacidae
- Gephyrocharax melanocheirscientificCharacidae
- Gephyrocharax sinuensisscientificCharacidae
- Gephyrocharax torresiscientificCharacidae
- Gephyrocharax valenciascientificCharacidae
- Gephyrocharax venezuelaescientificCharacidae
- Gephyrocharax whaleriscientificCharacidae
- Giacopini's Tetracommon — Bryconops giacopinii
- Giant hatchetfishcommon — Thoracocharax securis
- Giant swamp tetracommon — Astyanax maximus
- Giant tigerfishcommon — Hydrocynus goliath
- Glandulocauda caeruleascientificCharacidae
- Glandulocauda melanopleurascientificCharacidae
- Glass bloodfincommon — Aphyocharax anisitsi
- Glass bloodfincommon — Prionobrama filigera
- Glass Bloodfincommon — Prionobrama paraguayensis
- Glass bloodfin tetracommon — Prionobrama filigera
- Glass Characincommon — Charax michaeli
- Glass Characincommon — Roeboides affinis
- Glass characincommon — Roeboides microlepis
- Glass Characincommon — Roeboides numerosus
- Glass Headstandercommon — Charax gibbosus
- Glass Headstandercommon — Roeboides myersii
- Glass Tetracommon — Bario oligolepis
- Glass Tetracommon — Moenkhausia intermedia
- Glass Tetracommon — Phenacogaster wayana
- Glass tetracommon — Prionobrama filigera
- Glass Tetra with Golden Frontcommon — Xenagoniates bondi
- Glass-scaled Tetracommon — Bario oligolepis
- Glassbloodfincommon — Prionobrama filigera
- Glolight tetracommon — Hemigrammus erythrozonus
- Glowlight tetracommon — Hemigrammus erythrozonus
- Gold neon tetracommon — Paracheirodon innesi
- Gold phantom tetracommon — Hyphessobrycon roseus
- Gold Tetracommon — Hemigrammus rodwayi
- Gold Tetracommon — Rachoviscus crassiceps
- Gold-spotted Lebiasinacommon — Lebiasina aureoguttata
- Golden Glowlight Tetracommon — Hemigrammus bellottii
- Golden Parakeet Tetracommon — Moenkhausia guaruba
- Golden Pencilfishcommon — Nannostomus beckfordi
- Golden Pristella Tetracommon — Pristella maxillaris
- Golden Tetracommon — Hyphessobrycon moniliger
- Goldencrown tetracommon — Aphyocharax pusillus
- Goldencrowned aphyocharaxcommon — Aphyocharax pusillus
- Goldentip Tetracommon — Hemigrammus ulreyi
- Goldshoulder rosy tetracommon — Hyphessobrycon paepkei
- Goldspot Tetracommon — Lebiasina aureoguttata
- Goldspotted tetracommon — Hyphessobrycon griemi
- Goldstripe Characincommon — Creagrutus beni
- Goldtail Tetracommon — Astyanax aurocaudatus
- Goliath tigerfishcommon — Hydrocynus goliath
- Goulding's Dogtooth Tetracommon — Cynopotamus gouldingi
- Gracile Tetracommon — Hyphessobrycon gracilior
- Grand Pencilfishcommon — Nannostomus grandis
- Green fire tetracommon — Aphyocharax rathbuni
- Green line tetracommon — Iguanodectes spilurus
- Green Moonfish Tetracommon — Bathyaethiops greeni
- Green neon tetracommon — Paracheirodon simulans
- Green-eyed Moenkhausiacommon — Moenkhausia chlorophthalma
- Green's Moonfish Tetracommon — Bathyaethiops greeni
- Griem's tetracommon — Hyphessobrycon griemi
- Grundulus bogotensisscientificCharacidae
- Grundulus cochaescientificCharacidae
- Grundulus quitoensisscientificCharacidae
- Guapuchacommon — Grundulus bogotensis
- Guaraní Tetracommon — Diapoma guarani
- Guatemalan headstandercommon — Roeboides guatemalensis
- Guiana Tetracommon — Makunaima guianensis
- Gymnocharacinus bergiiscientificCharacidae
- Gymnocorymbus bondiscientificCharacidae
- Gymnocorymbus flaviolimaiscientificCharacidae
- Gymnocorymbus ternetziscientificCharacidae
- Gymnocorymbus thayeriscientificCharacidae
H
- Half-banded Pyrrhulinacommon — Pyrrhulina semifasciata
- Half-lined Characincommon — Charax hemigrammus
- Half-red Tetracommon — Hemigrammus stictus
- Half-striped Penguin Tetracommon — Thayeria ifati
- Harald's Tetracommon — Holopristis haraldi
- Harald's Tetracommon — Hyphessobrycon haraldschultzi
- Harrison's pencilfishcommon — Nannostomus harrisoni
- Haseman's Tetracommon — Moenkhausia hasemani
- Hasemania diastatosscientificCharacidae
- Hasemania hanseniscientificCharacidae
- Hasemania maxillarisscientificCharacidae
- Hasemania melanurascientificCharacidae
- Hasemania nanascientificCharacidae
- Hasemania negodaguascientificCharacidae
- Hasemania piatanscientificCharacidae
- Hatchet Tetracommon — Galeocharax gulo
- Hauxwell's Tetracommon — Ctenobrycon hauxwellianus
- Head and tail light tetracommon — Holopristis ocellifera
- Head-and-tail-light fishcommon — Holopristis falsa
- Head-and-taillight Tetracommon — Holopristis ocellifera
- Hemibrycon antioquiaescientificCharacidae
- Hemibrycon beniscientificCharacidae
- Hemibrycon boquiaescientificCharacidae
- Hemibrycon brevispiniscientificCharacidae
- Hemibrycon cairoensisscientificCharacidae
- Hemibrycon cardalensisscientificCharacidae
- Hemibrycon carrilloiscientificCharacidae
- Hemibrycon colombianusscientificCharacidae
- Hemibrycon dariensisscientificCharacidae
- Hemibrycon decurrensscientificCharacidae
- Hemibrycon dentatusscientificCharacidae
- Hemibrycon divisorensisscientificCharacidae
- Hemibrycon fasciatusscientificCharacidae
- Hemibrycon guejarensisscientificCharacidae
- Hemibrycon helleriscientificCharacidae
- Hemibrycon huambonicusscientificCharacidae
- Hemibrycon inambariscientificCharacidae
- Hemibrycon jaboneroscientificCharacidae
- Hemibrycon jelskiiscientificCharacidae
- Hemibrycon metaescientificCharacidae
- Hemibrycon microformaascientificCharacidae
- Hemibrycon mikrostiktosscientificCharacidae
- Hemibrycon orcesiscientificCharacidae
- Hemibrycon paezscientificCharacidae
- Hemibrycon palomaescientificCharacidae
- Hemibrycon polyodonscientificCharacidae
- Hemibrycon quindosscientificCharacidae
- Hemibrycon rafaelensisscientificCharacidae
- Hemibrycon raqueliaescientificCharacidae
- Hemibrycon sanjuanensisscientificCharacidae
- Hemibrycon santamartaescientificCharacidae
- Hemibrycon sierraensisscientificCharacidae
- Hemibrycon surinamensisscientificCharacidae
- Hemibrycon taeniurusscientificCharacidae
- Hemibrycon tridensscientificCharacidae
- Hemibrycon veloxscientificCharacidae
- Hemibrycon virolinicascientificCharacidae
- Hemibrycon yacopiaescientificCharacidae
- Hemigrammopetersius barnardisynonym — now Rhabdalestes barnardi
- Hemigrammopetersius majorscientificAlestidae
- Hemigrammopetersius pulcherscientificAlestidae
- Hemigrammopetersius urotaeniascientificAlestidae
- Hemigrammus aereusscientificCharacidae
- Hemigrammus aguarunascientificCharacidae
- Hemigrammus analisscientificCharacidae
- Hemigrammus anisitsisynonym — now Psalidodon anisitsi
- Hemigrammus apiakascientificCharacidae
- Hemigrammus aruascientificCharacidae
- Hemigrammus ataktosscientificCharacidae
- Hemigrammus barrigonaescientificCharacidae
- Hemigrammus bellottiiscientificCharacidae
- Hemigrammus bleherisynonym — now Petitella bleheri
- Hemigrammus boesemaniscientificCharacidae
- Hemigrammus brevisscientificCharacidae
- Hemigrammus caudovittatussynonym — now Psalidodon anisitsi
- Hemigrammus changaescientificCharacidae
- Hemigrammus coeruleusscientificCharacidae
- Hemigrammus collettiiscientificCharacidae
- Hemigrammus copeiscientificCharacidae
- Hemigrammus cupreusscientificCharacidae
- Hemigrammus cylindricusscientificCharacidae
- Hemigrammus diagonicusscientificCharacidae
- Hemigrammus durbinaescientificCharacidae
- Hemigrammus eigenmanniscientificCharacidae
- Hemigrammus elegansscientificCharacidae
- Hemigrammus erythrozonusscientificCharacidae
- Hemigrammus falsussynonym — now Holopristis falsa
- Hemigrammus filamentosusscientificCharacidae
- Hemigrammus gracilisscientificCharacidae
- Hemigrammus grammicusscientificCharacidae
- Hemigrammus guyanensisscientificCharacidae
- Hemigrammus haraldisynonym — now Holopristis haraldi
- Hemigrammus hyanuaryscientificCharacidae
- Hemigrammus iotascientificCharacidae
- Hemigrammus levisscientificCharacidae
- Hemigrammus luelingiscientificCharacidae
- Hemigrammus lunatusscientificCharacidae
- Hemigrammus machadoiscientificCharacidae
- Hemigrammus mahnertiscientificCharacidae
- Hemigrammus marginatusscientificCharacidae
- Hemigrammus mateiscientificCharacidae
- Hemigrammus megacepsscientificCharacidae
- Hemigrammus melanochrousscientificCharacidae
- Hemigrammus melogrammusscientificCharacidae
- Hemigrammus micropterusscientificCharacidae
- Hemigrammus microstomusscientificCharacidae
- Hemigrammus mimusscientificCharacidae
- Hemigrammus neptunusscientificCharacidae
- Hemigrammus ocellifersynonym — now Holopristis ocellifera
- Hemigrammus orascientificCharacidae
- Hemigrammus orthusscientificCharacidae
- Hemigrammus paranascientificCharacidae
- Hemigrammus pretoensisscientificCharacidae
- Hemigrammus pulcherscientificCharacidae
- Hemigrammus rhodostomussynonym — now Petitella rhodostoma
- Hemigrammus rodwayiscientificCharacidae
- Hemigrammus rubrostriatusscientificCharacidae
- Hemigrammus schmardaescientificCharacidae
- Hemigrammus serrazulscientificCharacidae
- Hemigrammus silimoniscientificCharacidae
- Hemigrammus stictusscientificCharacidae
- Hemigrammus taphorniscientificCharacidae
- Hemigrammus tocantinsiscientificCharacidae
- Hemigrammus tridensscientificCharacidae
- Hemigrammus tupebasscientificCharacidae
- Hemigrammus ulreyiscientificCharacidae
- Hemigrammus unilineatusscientificCharacidae
- Hemigrammus vorderwinkleriscientificCharacidae
- Hemigrammus yinyangscientificCharacidae
- Heterocheirodon jacuiensisscientificCharacidae
- Heterocheirodon yataiscientificCharacidae
- Highbacked tetracommon — Hyphessobrycon haraldschultzi
- Highfin Rhoadsiacommon — Rhoadsia altipinna
- Highfin Tetracommon — Rhoadsia altipinna
- Hilda's Tetracommon — Hyphessobrycon hildae
- Hockey-stick tetracommon — Thayeria boehlkei
- Hollandichthys multifasciatusscientificCharacidae
- Hollandichthys taramandahyscientificCharacidae
- Holopristis aguarunasynonym — now Hemigrammus aguaruna
- Holopristis falsascientificCharacidae
- Holopristis guyanensissynonym — now Hemigrammus guyanensis
- Holopristis haraldiscientificCharacidae
- Holopristis luelingisynonym — now Hemigrammus luelingi
- Holopristis neptunussynonym — now Hemigrammus neptunus
- Holopristis ocellifersynonym — now Holopristis ocellifera
- Holopristis ocelliferascientificCharacidae
- Holopristis pulchrasynonym — now Hemigrammus pulcher
- Holopristis yinyangsynonym — now Hemigrammus yinyang
- Holoshesthes pequirascientificCharacidae
- Huaijacommon — Lebiasina bimaculata
- Hummingbird tetracommon — Trochilocharax ornatus
- Humpback Characincommon — Galeocharax humeralis
- Humpback headstandercommon — Charax gibbosus
- Hydrocynus brevisscientificAlestidae
- Hydrocynus forskahliiscientificAlestidae
- Hydrocynus goliathscientificAlestidae
- Hydrocynus tanzaniaescientificAlestidae
- Hydrocynus vittatusscientificAlestidae
- Hyphessobrycon acaciaescientificCharacidae
- Hyphessobrycon agulhascientificCharacidae
- Hyphessobrycon albolineatumscientificCharacidae
- Hyphessobrycon albolineatussynonym — now Hyphessobrycon albolineatum
- Hyphessobrycon amandaescientificCharacidae
- Hyphessobrycon amapaensisscientificCharacidae
- Hyphessobrycon amaronensisscientificCharacidae
- Hyphessobrycon anisitsisynonym — now Psalidodon anisitsi
- Hyphessobrycon arianaescientificCharacidae
- Hyphessobrycon aucascientificCharacidae
- Hyphessobrycon axelrodiscientificCharacidae
- Hyphessobrycon bentosiscientificCharacidae
- Hyphessobrycon bifasciatusscientificCharacidae
- Hyphessobrycon borealisscientificCharacidae
- Hyphessobrycon boulengeriscientificCharacidae
- Hyphessobrycon brumadoscientificCharacidae
- Hyphessobrycon cachimbensisscientificCharacidae
- Hyphessobrycon callistussynonym — now Megalamphodus eques
- Hyphessobrycon catableptusscientificCharacidae
- Hyphessobrycon chocoensisscientificCharacidae
- Hyphessobrycon citrusscientificCharacidae
- Hyphessobrycon clavatusscientificCharacidae
- Hyphessobrycon coelestinusscientificCharacidae
- Hyphessobrycon columbianusscientificCharacidae
- Hyphessobrycon comodoroscientificCharacidae
- Hyphessobrycon compressusscientificCharacidae
- Hyphessobrycon condotensisscientificCharacidae
- Hyphessobrycon copelandiscientificCharacidae
- Hyphessobrycon cyanotaeniascientificCharacidae
- Hyphessobrycon diancistrusscientificCharacidae
- Hyphessobrycon dorsalisscientificCharacidae
- Hyphessobrycon duragenysscientificCharacidae
- Hyphessobrycon ecuadorensisscientificCharacidae
- Hyphessobrycon ecuadoriensisscientificCharacidae
- Hyphessobrycon eilyosscientificCharacidae
- Hyphessobrycon elachysscientificCharacidae
- Hyphessobrycon eosscientificCharacidae
- Hyphessobrycon epicharisscientificCharacidae
- Hyphessobrycon equessynonym — now Megalamphodus eques
- Hyphessobrycon ericaescientificCharacidae
- Hyphessobrycon erythrostigmasynonym — now Megalamphodus erythrostigma
- Hyphessobrycon eschwartzaescientificCharacidae
- Hyphessobrycon fernandeziscientificCharacidae
- Hyphessobrycon flammeusscientificCharacidae
- Hyphessobrycon frankeiscientificCharacidae
- Hyphessobrycon georgettaescientificCharacidae
- Hyphessobrycon graciliorscientificCharacidae
- Hyphessobrycon griemiscientificCharacidae
- Hyphessobrycon haraldschultziscientificCharacidae
- Hyphessobrycon hasemaniscientificCharacidae
- Hyphessobrycon heliacusscientificCharacidae
- Hyphessobrycon herbertaxelrodiscientificCharacidae
- Hyphessobrycon heteresthesscientificCharacidae
- Hyphessobrycon heterorhabdusscientificCharacidae
- Hyphessobrycon hexastichosscientificCharacidae
- Hyphessobrycon hildaescientificCharacidae
- Hyphessobrycon igneusscientificCharacidae
- Hyphessobrycon iheringiscientificCharacidae
- Hyphessobrycon inconstansscientificCharacidae
- Hyphessobrycon isiriscientificCharacidae
- Hyphessobrycon itaparicensisscientificCharacidae
- Hyphessobrycon jackrobertsiscientificCharacidae
- Hyphessobrycon kayabiscientificCharacidae
- Hyphessobrycon khardinaescientificCharacidae
- Hyphessobrycon klausanniscientificCharacidae
- Hyphessobrycon langeaniiscientificCharacidae
- Hyphessobrycon latenssynonym — now Andromakhe latens
- Hyphessobrycon latusscientificCharacidae
- Hyphessobrycon loretoensisscientificCharacidae
- Hyphessobrycon loweaescientificCharacidae
- Hyphessobrycon maculicaudascientificCharacidae
- Hyphessobrycon mamuruensisscientificCharacidae
- Hyphessobrycon mapinguariscientificCharacidae
- Hyphessobrycon margitaescientificCharacidae
- Hyphessobrycon mavroscientificCharacidae
- Hyphessobrycon megalopterussynonym — now Megalamphodus megalopterus
- Hyphessobrycon melanostichosscientificCharacidae
- Hyphessobrycon melasemeionscientificCharacidae
- Hyphessobrycon melazonatusscientificCharacidae
- Hyphessobrycon meridionalisscientificCharacidae
- Hyphessobrycon metaescientificCharacidae
- Hyphessobrycon micropterussynonym — now Megalamphodus micropterus
- Hyphessobrycon millerisynonym — now Hyphessobrycon compressus
- Hyphessobrycon minimusscientificCharacidae
- Hyphessobrycon minorscientificCharacidae
- Hyphessobrycon moniligerscientificCharacidae
- Hyphessobrycon montagiscientificCharacidae
- Hyphessobrycon mutabilisscientificCharacidae
- Hyphessobrycon myrmexscientificCharacidae
- Hyphessobrycon natagaimascientificCharacidae
- Hyphessobrycon nicolasiscientificCharacidae
- Hyphessobrycon nigerscientificCharacidae
- Hyphessobrycon nigricinctusscientificCharacidae
- Hyphessobrycon notidanosscientificCharacidae
- Hyphessobrycon ocasoensisscientificCharacidae
- Hyphessobrycon oritoensisscientificCharacidae
- Hyphessobrycon otrynusscientificCharacidae
- Hyphessobrycon paepkeiscientificCharacidae
- Hyphessobrycon panamensisscientificCharacidae
- Hyphessobrycon pandoscientificCharacidae
- Hyphessobrycon parissynonym — now Andromakhe paris
- Hyphessobrycon parvellusscientificCharacidae
- Hyphessobrycon pastanaiscientificCharacidae
- Hyphessobrycon paucilepisscientificCharacidae
- Hyphessobrycon peruvianusscientificCharacidae
- Hyphessobrycon peugeotiscientificCharacidae
- Hyphessobrycon piabinhasscientificCharacidae
- Hyphessobrycon pinnistriatusscientificCharacidae
- Hyphessobrycon pirangascientificCharacidae
- Hyphessobrycon plumbellusscientificCharacidae
- Hyphessobrycon poecilioidesscientificCharacidae
- Hyphessobrycon procerusscientificCharacidae
- Hyphessobrycon procyonscientificCharacidae
- Hyphessobrycon proteusscientificCharacidae
- Hyphessobrycon pulchripinnisscientificCharacidae
- Hyphessobrycon pyrrhonotusscientificCharacidae
- Hyphessobrycon pytaiscientificCharacidae
- Hyphessobrycon reticulatusscientificCharacidae
- Hyphessobrycon rheophilusscientificCharacidae
- Hyphessobrycon ribeiroiscientificCharacidae
- Hyphessobrycon robustulusscientificCharacidae
- Hyphessobrycon rosaceusscientificCharacidae
- Hyphessobrycon roseusscientificCharacidae
- Hyphessobrycon rutiliflavidusscientificCharacidae
- Hyphessobrycon saiziscientificCharacidae
- Hyphessobrycon santaesynonym — now Psalidodon santae
- Hyphessobrycon savageiscientificCharacidae
- Hyphessobrycon schauenseeiscientificCharacidae
- Hyphessobrycon scholzeiscientificCharacidae
- Hyphessobrycon scutulatusscientificCharacidae
- Hyphessobrycon sebastianiscientificCharacidae
- Hyphessobrycon serpaesynonym — now Megalamphodus eques
- Hyphessobrycon simulatusscientificCharacidae
- Hyphessobrycon socolofiscientificCharacidae
- Hyphessobrycon sovichthysscientificCharacidae
- Hyphessobrycon stegemanniscientificCharacidae
- Hyphessobrycon stenohalinussynonym — now Andromakhe stenohalina
- Hyphessobrycon stramineusscientificCharacidae
- Hyphessobrycon sweglesisynonym — now Megalamphodus sweglesi
- Hyphessobrycon taguaescientificCharacidae
- Hyphessobrycon takaseiscientificCharacidae
- Hyphessobrycon taphorniscientificCharacidae
- Hyphessobrycon taurocephalusscientificCharacidae
- Hyphessobrycon tenuisscientificCharacidae
- Hyphessobrycon tortugueraescientificCharacidae
- Hyphessobrycon tropisscientificCharacidae
- Hyphessobrycon tukunaiscientificCharacidae
- Hyphessobrycon tupisynonym — now Andromakhe tupi
- Hyphessobrycon tuyensisscientificCharacidae
- Hyphessobrycon uaisoscientificCharacidae
- Hyphessobrycon vilmaescientificCharacidae
- Hyphessobrycon vinaceusscientificCharacidae
- Hyphessobrycon wadaiscientificCharacidae
- Hyphessobrycon wajatscientificCharacidae
- Hyphessobrycon weitzmanorumscientificCharacidae
- Hyphessobrycon werneriscientificCharacidae
- Hyphessobrycon wosiackiiscientificCharacidae
- Hyphessobrycon zoescientificCharacidae
- Hypobrycon leptorhynchusscientificCharacidae
- Hypobrycon marombascientificCharacidae
- Hysteronotus megalostomusscientificCharacidae
I
- I-beam Tetracommon — Hemigrammus iota
- Ichó characincommon — Bryconamericus ichoensis
- Iguanodectes adujaiscientificIguanodectidae
- Iguanodectes geisleriscientificIguanodectidae
- Iguanodectes gracilisscientificIguanodectidae
- Iguanodectes polylepisscientificIguanodectidae
- Iguanodectes purusiiscientificIguanodectidae
- Iguanodectes rachoviiscientificIguanodectidae
- Iguanodectes spilurusscientificIguanodectidae
- Iguanodectes variatusscientificIguanodectidae
- Imberi Alestescommon — Brachyalestes imberi
- Imperial Tetracommon — Hyphessobrycon nigricinctus
- Inkorogocommon — Brycinus rhodopleura
- Inpaichthys kerriscientificCharacidae
- Inpaichthys luizaescientificCharacidae
- Inpaichthys nambiquarascientificCharacidae
- Inpaichthys parauapirangascientificCharacidae
- Insignis Tetracommon — Nanocheirodon insignis
- Iotabrycon praecoxscientificCharacidae
J
- Jabonero Tetracommon — Hemibrycon jabonero
- Jackson's Alestescommon — Brachyalestes jacksonii
- Jackson's Tetracommon — Brachyalestes jacksonii
- James's Moenkhausiacommon — Moenkhausia jamesi
- January Tetracommon — Hemigrammus hyanuary
- Jelly bean tetracommon — Ladigesia roloffi
- Jenyn's Characincommon — Oligosarcus jenynsii
- Jewel Tetracommon — Megalamphodus eques
- Julillacommon — Pyrrhulina australis
- Jumping Characincommon — Copella arnoldi
- Jumping Tetracommon — Hemibrycon tridens
- Junior Tetracommon — Hyphessobrycon robustulus
- Jupiaba abramoidesscientificCharacidae
- Jupiaba acanthogasterscientificCharacidae
- Jupiaba ajuricabascientificCharacidae
- Jupiaba anteriorscientificCharacidae
- Jupiaba anteroidesscientificCharacidae
- Jupiaba apenimascientificCharacidae
- Jupiaba asymmetricascientificCharacidae
- Jupiaba atypindiscientificCharacidae
- Jupiaba citrinascientificCharacidae
- Jupiaba elassonaktisscientificCharacidae
- Jupiaba essequibensisscientificCharacidae
- Jupiaba iasyscientificCharacidae
- Jupiaba keithiscientificCharacidae
- Jupiaba kuruascientificCharacidae
- Jupiaba maroniensisscientificCharacidae
- Jupiaba meunieriscientificCharacidae
- Jupiaba minorscientificCharacidae
- Jupiaba mucronatascientificCharacidae
- Jupiaba ocellatascientificCharacidae
- Jupiaba paranatingascientificCharacidae
- Jupiaba pinnatascientificCharacidae
- Jupiaba piranascientificCharacidae
- Jupiaba poekoteroscientificCharacidae
- Jupiaba polylepisscientificCharacidae
- Jupiaba porangascientificCharacidae
- Jupiaba potaroensisscientificCharacidae
- Jupiaba scologasterscientificCharacidae
- Jupiaba yarinascientificCharacidae
- Jupiaba zonatascientificCharacidae
K
- Kalunga Tetracommon — Psalidodon kalunga
- Kennedy's Tetracommon — Astyanax kennedyi
- Kennedy's Tetracommon — Ctenobrycon kennedyi
- Kilian's Tetracommon — Cheirodon kiliani
- Kingsley's Tetracommon — Brachyalestes kingsleyae
- Kitty Tetracommon — Hyphessobrycon heliacus
- Kitty Tetracommon — Hyphessobrycon loweae
- Knodus alphascientificCharacidae
- Knodus borariscientificCharacidae
- Knodus borkiscientificCharacidae
- Knodus brevicepsscientificCharacidae
- Knodus caquetaescientificCharacidae
- Knodus chapadaescientificCharacidae
- Knodus deltascientificCharacidae
- Knodus diaphanusscientificCharacidae
- Knodus dorsomaculatusscientificCharacidae
- Knodus figueiredoiscientificCharacidae
- Knodus gammascientificCharacidae
- Knodus geryiscientificCharacidae
- Knodus heteresthesscientificCharacidae
- Knodus hypopterusscientificCharacidae
- Knodus longusscientificCharacidae
- Knodus megalopsscientificCharacidae
- Knodus meridaescientificCharacidae
- Knodus mizquaescientificCharacidae
- Knodus moenkhausiiscientificCharacidae
- Knodus motatanensisscientificCharacidae
- Knodus orteguasaescientificCharacidae
- Knodus pascoscientificCharacidae
- Knodus savannensisscientificCharacidae
- Knodus septentrionalisscientificCharacidae
- Knodus shinahotascientificCharacidae
- Knodus smithiscientificCharacidae
- Knodus tanaothorosscientificCharacidae
- Knodus tiquiensisscientificCharacidae
- Knodus transandeanusscientificCharacidae
- Knodus victoriaescientificCharacidae
- Knodus weitzmaniscientificCharacidae
- Knodus ytuanamascientificCharacidae
- Kolpotocheirodon figueiredoiscientificCharacidae
- Kolpotocheirodon thelourascientificCharacidae
- Kommasalmlercommon — Moenkhausia comma
- Krieg's Mini Tetracommon — Serrapinnus kriegi
- Kyburz Tetracommon — Pseudochalceus kyburzi
L
- La Cocha Tetracommon — Grundulus cochae
- Lacandon Tetracommon — Astyanax ocotal
- Ladigesia roloffiscientificAlestidae
- Lake Leopold Tetracommon — Alestopetersius leopoldianus
- Lake Nicaragua Tetracommon — Astyanax cocibolca
- Lake Petén Itzá tetracommon — Astyanax petenensis
- Lake Victoria Tetracommon — Brachyalestes sadleri
- Lambarécommon — Phenacogaster wayana
- Lambaricommon — Astyanax altiparanae
- Lambaricommon — Astyanax pirauba
- Lambaricommon — Astyanax varzeae
- Lambaricommon — Bryconamericus lambari
- Lambaricommon — Cheirodon parahybae
- Lambaricommon — Ctenobrycon multiradiatus
- Lambaricommon — Diapoma pyrrhopteryx
- Lambaricommon — Hemigrammus brevis
- Lambaricommon — Hyphessobrycon langeanii
- Lambaricommon — Moenkhausia comma
- Lambaricommon — Psalidodon crenuchoides
- Lambaricommon — Serrapinnus calliurus
- Lambari do Rabo Amarelocommon — Astyanax jacuhiensis
- Lambari do riocommon — Deuterodon janeiroensis
- Lambari-bocarracommon — Oligosarcus argenteus
- Lambarizinho-do-rabo-vermelhocommon — Astyanax trierythropterus
- Landonia latidensscientificCharacidae
- Lapis Tetracommon — Hyphessobrycon cyanotaenia
- Large Mouth Tetracommon — Oligosarcus jenynsii
- Large Pencilfishcommon — Nannostomus grandis
- Large Stain Glass Tetracommon — Phenacogaster megalostictus
- Large-eye Tetracommon — Moenkhausia megalops
- Large-scaled Glass Characincommon — Charax macrolepis
- Large-scaled Moenkhausiacommon — Moenkhausia grandisquamis
- Large-scaled Tetracommon — Brycinus grandisquamis
- Large-toothed Robbercommon — Brachyalestes ferox
- Largescale Pyrrhulinacommon — Pyrrhulina maxima
- Lateral-stripe Robberfishcommon — Brachyalestes lateralis
- Least Pencilfishcommon — Nannostomus minimus
- Lebiasina ardilaiscientificLebiasinidae
- Lebiasina astrigatascientificLebiasinidae
- Lebiasina aureoguttatascientificLebiasinidae
- Lebiasina bimaculatascientificLebiasinidae
- Lebiasina borucascientificLebiasinidae
- Lebiasina chocoensisscientificLebiasinidae
- Lebiasina chucuriensisscientificLebiasinidae
- Lebiasina colombiascientificLebiasinidae
- Lebiasina elongatascientificLebiasinidae
- Lebiasina erythrinoidesscientificLebiasinidae
- Lebiasina festaescientificLebiasinidae
- Lebiasina floridablancaensisscientificLebiasinidae
- Lebiasina intermediascientificLebiasinidae
- Lebiasina marilynaescientificLebiasinidae
- Lebiasina melanoguttatascientificLebiasinidae
- Lebiasina minutascientificLebiasinidae
- Lebiasina multimaculatascientificLebiasinidae
- Lebiasina narinensisscientificLebiasinidae
- Lebiasina ortegaiscientificLebiasinidae
- Lebiasina panamensisscientificLebiasinidae
- Lebiasina provenzanoiscientificLebiasinidae
- Lebiasina taphorniscientificLebiasinidae
- Lebiasina unitaeniatascientificLebiasinidae
- Lebiasina uruyensisscientificLebiasinidae
- Lebiasina yepeziscientificLebiasinidae
- Lebiasina yuruaniensisscientificLebiasinidae
- Lemon tetracommon — Hyphessobrycon pulchripinnis
- Leopold's Tetracommon — Alestopetersius leopoldianus
- Leopold's Tetracommon — Astyanax leopoldi
- Lepidocharax burnsiscientificCharacidae
- Lepidocharax diamantinascientificCharacidae
- Leptagoniates steindachneriscientificCharacidae
- Leptobrycon jatuaranaescientificCharacidae
- Lesser Bleeding Heart Tetracommon — Hyphessobrycon socolofi
- Limeback Tetracommon — Hemigrammopetersius urotaenia
- Lined Astyanaxcommon — Astyanax lineatus
- Lined Tetracommon — Pseudochalceus lineatus
- Lipstick Tetracommon — Moenkhausia cosmops
- Lizard Bite Tetracommon — Bryconops giacopinii
- Lizard Bite Tetracommon — Iguanodectes purusii
- Lizard Tetracommon — Iguanodectes adujai
- Lomboma Tetracommon — Brachypetersius huloti
- Long-finned tetracommon — Bryconalestes longipinnis
- Long-snouted Oligosarcuscommon — Oligosarcus longirostris
- Longfin Poptellacommon — Poptella longipinnis
- Longfin serpae tetracommon — Megalamphodus eques
- Longfin tetracommon — Bryconalestes longipinnis
- Longjaw Tetracommon — Astyanax bransfordii
- Lophiobrycon weitzmaniscientificCharacidae
- Loreto Tetracommon — Hyphessobrycon loretoensis
- Loreto tetracommon — Hyphessobrycon peruvianus
- Lowe's Tetracommon — Hyphessobrycon loweae
- Lüling's Tetracommon — Hemigrammus luelingi
M
- Macal tetracommon — Astyanax macal
- Macropsobrycon uruguayanaescientificCharacidae
- Macropsobrycon xinguensisscientificCharacidae
- Magdalena Tetracommon — Argopleura magdalenensis
- Magdalena Tetracommon — Ctenobrycon magdalenae
- Makunaima guaporensisscientificCharacidae
- Makunaima guianensisscientificCharacidae
- Makunaima multidensscientificCharacidae
- Makunaima pittierisynonym — now Moenkhausia pittieri
- Managua Tetracommon — Astyanax nasutus
- Marbled Hatchetfishcommon — Carnegiella strigata
- Marginatus pencilfishcommon — Nannostomus marginatus
- Marilyn's Pencilfishcommon — Nannostomus marilynae
- Markiana geayiscientificCharacidae
- Markiana nigripinnisscientificCharacidae
- Mayan Tetracommon — Hyphessobrycon compressus
- Mazaruni Pencilfishcommon — Derhamia hoffmannorum
- Megalamphodus bentosisynonym — now Hyphessobrycon bentosi
- Megalamphodus copelandisynonym — now Hyphessobrycon copelandi
- Megalamphodus epicharissynonym — now Hyphessobrycon epicharis
- Megalamphodus equesscientificCharacidae
- Megalamphodus erythrostigmascientificCharacidae
- Megalamphodus haraldschultzisynonym — now Hyphessobrycon haraldschultzi
- Megalamphodus khardinaesynonym — now Hyphessobrycon khardinae
- Megalamphodus megalopterusscientificCharacidae
- Megalamphodus micropterusscientificCharacidae
- Megalamphodus rosaceussynonym — now Hyphessobrycon rosaceus
- Megalamphodus socolofisynonym — now Hyphessobrycon socolofi
- Megalamphodus sweglesiscientificCharacidae
- Meta Characincommon — Charax metae
- Meta Headstandercommon — Charax metae
- Meta Tetracommon — Moenkhausia metae
- Mexican tetracommon — Astyanax mexicanus
- Micralestes acutidensscientificAlestidae
- Micralestes ambiguusscientificAlestidae
- Micralestes argyrotaeniascientificAlestidae
- Micralestes comoensisscientificAlestidae
- Micralestes congicusscientificAlestidae
- Micralestes eburneensisscientificAlestidae
- Micralestes elongatusscientificAlestidae
- Micralestes fodoriscientificAlestidae
- Micralestes holargyreusscientificAlestidae
- Micralestes humilisscientificAlestidae
- Micralestes lualabaescientificAlestidae
- Micralestes occidentalisscientificAlestidae
- Micralestes pabrensisscientificAlestidae
- Micralestes schellyscientificAlestidae
- Micralestes stormsiscientificAlestidae
- Micralestes vittatusscientificAlestidae
- Microgenys lativirgatascientificCharacidae
- Microgenys minutascientificCharacidae
- Microgenys weyrauchiscientificCharacidae
- Microschemobrycon callopsscientificCharacidae
- Microschemobrycon casiquiarescientificCharacidae
- Microschemobrycon elongatusscientificCharacidae
- Microschemobrycon geisleriscientificCharacidae
- Microschemobrycon guaporensisscientificCharacidae
- Microschemobrycon melanotusscientificCharacidae
- Microschemobrycon meyburgiscientificCharacidae
- Miller's Tetracommon — Hyphessobrycon compressus
- Mimagoniates barberiscientificCharacidae
- Mimagoniates inequalisscientificCharacidae
- Mimagoniates lateralisscientificCharacidae
- Mimagoniates microlepisscientificCharacidae
- Mimagoniates pulcherscientificCharacidae
- Mimagoniates rheocharisscientificCharacidae
- Mimagoniates sylvicolascientificCharacidae
- Mimic Tetracommon — Hemigrammus mimus
- Mini Rosy Tetracommon — Hyphessobrycon dorsalis
- Miniature Pencilfishcommon — Nannostomus minimus
- Minor Tetracommon — Hyphessobrycon minor
- Mint Tetracommon — Serrapinnus sterbai
- Minute Tetracommon — Hyphessobrycon minimus
- Mixobrycon ribeiroiscientificCharacidae
- Moenkhausia affinisscientificCharacidae
- Moenkhausia agnesaescientificCharacidae
- Moenkhausia andricascientificCharacidae
- Moenkhausia atahualpianascientificCharacidae
- Moenkhausia aurantiascientificCharacidae
- Moenkhausia aurorascientificCharacidae
- Moenkhausia australissynonym — now Bario australis
- Moenkhausia barbouriscientificCharacidae
- Moenkhausia bellasomniosascientificCharacidae
- Moenkhausia benineiscientificCharacidae
- Moenkhausia bonitascientificCharacidae
- Moenkhausia britskiiscientificCharacidae
- Moenkhausia browniscientificCharacidae
- Moenkhausia celibelascientificCharacidae
- Moenkhausia cerosscientificCharacidae
- Moenkhausia chlorophthalmascientificCharacidae
- Moenkhausia chrysargyreascientificCharacidae
- Moenkhausia commascientificCharacidae
- Moenkhausia copeisynonym — now Hemigrammus copei
- Moenkhausia cosmopsscientificCharacidae
- Moenkhausia costaescientificCharacidae
- Moenkhausia cotinhoscientificCharacidae
- Moenkhausia crisnejasscientificCharacidae
- Moenkhausia dasalmasscientificCharacidae
- Moenkhausia diamantinascientificCharacidae
- Moenkhausia dichrourascientificCharacidae
- Moenkhausia diktyotascientificCharacidae
- Moenkhausia doceanasynonym — now Moenkhausia vittata
- Moenkhausia dorsinudascientificCharacidae
- Moenkhausia eurystaeniascientificCharacidae
- Moenkhausia forestiiscientificCharacidae
- Moenkhausia gracilimascientificCharacidae
- Moenkhausia grandisquamisscientificCharacidae
- Moenkhausia guarubascientificCharacidae
- Moenkhausia guianensissynonym — now Makunaima guianensis
- Moenkhausia hasemaniscientificCharacidae
- Moenkhausia heikoiscientificCharacidae
- Moenkhausia hemigrammoidesscientificCharacidae
- Moenkhausia hildaesynonym — now Moenkhausia lepidura
- Moenkhausia hysterostictascientificCharacidae
- Moenkhausia icaescientificCharacidae
- Moenkhausia inraiscientificCharacidae
- Moenkhausia intermediascientificCharacidae
- Moenkhausia irisscientificCharacidae
- Moenkhausia jamesiscientificCharacidae
- Moenkhausia justaescientificCharacidae
- Moenkhausia latascientificCharacidae
- Moenkhausia latissimascientificCharacidae
- Moenkhausia lepidurascientificCharacidae
- Moenkhausia levidorsascientificCharacidae
- Moenkhausia lineomaculatascientificCharacidae
- Moenkhausia lopesiscientificCharacidae
- Moenkhausia loweaescientificCharacidae
- Moenkhausia margitaescientificCharacidae
- Moenkhausia megalopsscientificCharacidae
- Moenkhausia metaescientificCharacidae
- Moenkhausia miangiscientificCharacidae
- Moenkhausia mikiascientificCharacidae
- Moenkhausia moisaescientificCharacidae
- Moenkhausia multidenssynonym — now Makunaima multidens
- Moenkhausia mutumscientificCharacidae
- Moenkhausia naponisscientificCharacidae
- Moenkhausia newtoniscientificCharacidae
- Moenkhausia nigromarginatascientificCharacidae
- Moenkhausia oligolepissynonym — now Bario oligolepis
- Moenkhausia orteguasaescientificCharacidae
- Moenkhausia ovalisscientificCharacidae
- Moenkhausia pankilopteryxscientificCharacidae
- Moenkhausia parecisscientificCharacidae
- Moenkhausia petymbuabascientificCharacidae
- Moenkhausia phaeonotascientificCharacidae
- Moenkhausia pittieriscientificCharacidae
- Moenkhausia plumbeascientificCharacidae
- Moenkhausia robertsiscientificCharacidae
- Moenkhausia rubrascientificCharacidae
- Moenkhausia sanctaefilomenaesynonym — now Bario sanctaefilomenae
- Moenkhausia schultziscientificCharacidae
- Moenkhausia shideleriscientificCharacidae
- Moenkhausia simulatascientificCharacidae
- Moenkhausia skolioplatussynonym — now Bario skolioplatus
- Moenkhausia solarisscientificCharacidae
- Moenkhausia steindachnerisynonym — now Bario steindachneri
- Moenkhausia surinamensisscientificCharacidae
- Moenkhausia takaseiscientificCharacidae
- Moenkhausia tergimaculascientificCharacidae
- Moenkhausia tridentatascientificCharacidae
- Moenkhausia uirapuruscientificCharacidae
- Moenkhausia venereiscientificCharacidae
- Moenkhausia vittatascientificCharacidae
- Moenkhausia xinguensisscientificCharacidae
- Mojaracommon — Hemibrycon polyodon
- Mojaracommon — Moenkhausia comma
- mojaritacommon — Attonitus ephimeros
- mojaritacommon — Creagrutus gracilis
- mojaritacommon — Creagrutus ortegai
- mojaritacommon — Creagrutus pearsoni
- mojaritacommon — Creagrutus peruanus
- mojaritacommon — Hemigrammus megaceps
- mojaritacommon — Hyphessobrycon tenuis
- Mojaritacommon — Microgenys lativirgata
- mojaritacommon — Scopaeocharax rhinodus
- mojaritacommon — Xenurobrycon heterodon
- mojaritacommon — Xenurobrycon polyancistrus
- Mojarracommon — Astyanax leonidas
- Mojarracommon — Bryconamericus poi
- Mojarracommon — Psalidodon erythropterus
- Mojarracommon — Psalidodon rutilus
- mojarra curvadacommon — Serrapinnus calliurus
- Mojarrillacommon — Ctenobrycon kennedyi
- mojarritacommon — Pyrrhulina punctata
- Mojarrita Cola Rojacommon — Aphyocharax dentatus
- Monotocheirodon drilosscientificCharacidae
- Monotocheirodon dudascientificCharacidae
- Monotocheirodon kontosscientificCharacidae
- Monotocheirodon pearsoniscientificCharacidae
- Moore's Tetracommon — Astyanacinus moorii
- Morado Tetracommon — Hyphessobrycon nigricinctus
- Mountain Stream Sardinecommon — Hemibrycon taeniurus
- Moyabamba Tetracommon — Astyanax longior
- Multi-banded tetracommon — Hollandichthys multifasciatus
- Mutum Tetracommon — Moenkhausia mutum
- Myers' Glass Characincommon — Roeboides myersii
- Myers' Hatchetfishcommon — Carnegiella myersi
- Myers' Tetracommon — Astyanax myersi
- Myers' Tetracommon — Chrysobrycon myersi
- Myxiops aphosscientificCharacidae
- Myxiops pelecusscientificCharacidae
N
- Naked Characincommon — Bryconamericus ternetzi
- Naked Characincommon — Gymnocharacinus bergii
- Naked Tetracommon — Bryconamericus ternetzi
- Nannopetersius ansorgiiscientificAlestidae
- Nannopetersius lambertiscientificAlestidae
- Nannopetersius mutambueiscientificAlestidae
- Nannostomus anduzeiscientificLebiasinidae
- Nannostomus beckfordiscientificLebiasinidae
- Nannostomus bifasciatusscientificLebiasinidae
- Nannostomus britskiiscientificLebiasinidae
- Nannostomus digrammusscientificLebiasinidae
- Nannostomus equesscientificLebiasinidae
- Nannostomus erythrurusscientificLebiasinidae
- Nannostomus espeiscientificLebiasinidae
- Nannostomus grandisscientificLebiasinidae
- Nannostomus harrisoniscientificLebiasinidae
- Nannostomus limatusscientificLebiasinidae
- Nannostomus marginatusscientificLebiasinidae
- Nannostomus marilynaescientificLebiasinidae
- Nannostomus minimusscientificLebiasinidae
- Nannostomus mortenthaleriscientificLebiasinidae
- Nannostomus nigrotaeniatusscientificLebiasinidae
- Nannostomus nitidusscientificLebiasinidae
- Nannostomus rubrocaudatusscientificLebiasinidae
- Nannostomus trifasciatusscientificLebiasinidae
- Nannostomus unifasciatusscientificLebiasinidae
- Nanocheirodon insignisscientificCharacidae
- Natterer's Bloodfincommon — Aphyocharax nattereri
- Natterer's Copellacommon — Copella nattereri
- Nego D'água Tetracommon — Hasemania negodagua
- Nematobrycon lacorteiscientificCharacidae
- Nematobrycon palmeriscientificCharacidae
- Nematocharax costaiscientificCharacidae
- Nematocharax venustusscientificCharacidae
- Neon Tetracommon — Paracheirodon innesi
- Neptune Tetracommon — Hemigrammus neptunus
- Ngachacommon — Alestes stuhlmannii
- Nicaragua Tetracommon — Astyanax nicaraguensis
- Nile Alestescommon — Alestes dentex
- Nile Characincommon — Alestes baremoze
- Northern Longfin Tetracommon — Rhabdalestes septentrionalis
- Notomelas Tetracommon — Serrapinnus notomelas
- Nurse Tetracommon — Brachyalestes nurse
O
- Oblique penguinfishcommon — Thayeria obliqua
- Odontostilbe avanhandavascientificCharacidae
- Odontostilbe dialepturascientificCharacidae
- Odontostilbe dierythrurascientificCharacidae
- Odontostilbe ecuadorensisscientificCharacidae
- Odontostilbe euspilurascientificCharacidae
- Odontostilbe euspilurussynonym — now Odontostilbe euspilura
- Odontostilbe fugitivascientificCharacidae
- Odontostilbe littorissynonym — now Serrapinnus littoris
- Odontostilbe microcephalascientificCharacidae
- Odontostilbe mitopterascientificCharacidae
- Odontostilbe nareudascientificCharacidae
- Odontostilbe paoscientificCharacidae
- Odontostilbe paraguayensisscientificCharacidae
- Odontostilbe parecisscientificCharacidae
- Odontostilbe pequirasynonym — now Holoshesthes pequira
- Odontostilbe pulchrascientificCharacidae
- Odontostilbe roloffiscientificCharacidae
- Odontostilbe splendidascientificCharacidae
- Odontostilbe stenodonsynonym — now Cheirodon stenodon
- Odontostilbe weitzmaniscientificCharacidae
- Odontostoechus lethostigmusscientificCharacidae
- Okavango Robbercommon — Rhabdalestes maunensis
- Oligobrycon microstomusscientificCharacidae
- Oligolepis Tetracommon — Oligosarcus oligolepis
- Oligosarcus acutirostrisscientificCharacidae
- Oligosarcus amomescientificCharacidae
- Oligosarcus argenteusscientificCharacidae
- Oligosarcus bolivianusscientificCharacidae
- Oligosarcus breviorisscientificCharacidae
- Oligosarcus hepsetusscientificCharacidae
- Oligosarcus itauscientificCharacidae
- Oligosarcus jacuiensisscientificCharacidae
- Oligosarcus jenynsiiscientificCharacidae
- Oligosarcus longirostrisscientificCharacidae
- Oligosarcus macrolepisscientificCharacidae
- Oligosarcus menezesiscientificCharacidae
- Oligosarcus oligolepisscientificCharacidae
- Oligosarcus paranensisscientificCharacidae
- Oligosarcus perdidoscientificCharacidae
- Oligosarcus pintoiscientificCharacidae
- Oligosarcus planaltinaescientificCharacidae
- Oligosarcus platensisscientificCharacidae
- Oligosarcus robustusscientificCharacidae
- Oligosarcus schindleriscientificCharacidae
- Oligosarcus solitariusscientificCharacidae
- Oligosarcus variiscientificCharacidae
- One-lined pencilfishcommon — Nannostomus unifasciatus
- One-stripe Astyanaxcommon — Astyanax unitaeniatus
- Ora Tetracommon — Hemigrammus ora
- Orange Congo Tetracommon — Phenacogrammus aurantiacus
- Orange Flash Congo Tetracommon — Alestopetersius nigropterus
- Orange tetracommon — Hyphessobrycon flammeus
- Ornate Copellacommon — Copella compta
- Ornate hummingbird tetracommon — Trochilocharax ornatus
- Ornate Tetracommon — Hyphessobrycon bentosi
- Orsted's Tetracommon — Astyanax orstedii
- Orthospinus franciscensisscientificCharacidae
- Othonocheirodus eigenmanniscientificCharacidae
- Oxybrycon parvulusscientificCharacidae
P
- Palometacommon — Stethaprion erythrops
- Palometacommon — Stichonodon insignis
- Pampa Tetracommon — Astyanax pampa
- Pampas Characincommon — Oligosarcus oligolepis
- Panama Lebiasinacommon — Lebiasina panamensis
- Panama Tetracommon — Astyanax panamensis
- Panama Tetracommon — Hyphessobrycon panamensis
- Panduro Tetracommon — Hyphessobrycon robustulus
- Pangani Robbercommon — Rhabdalestes tangensis
- Paracheirodon axelrodiscientificCharacidae
- Paracheirodon innesiscientificCharacidae
- Paracheirodon simulansscientificCharacidae
- Paragoniates alburnusscientificCharacidae
- Paraguayan Bloodfincommon — Prionobrama paraguayensis
- Parana scale-eating characincommon — Roeboides descalvadensis
- Paraná Tetracommon — Psalidodon paranae
- Parapristella aubyneiscientificCharacidae
- Parapristella georgiaescientificCharacidae
- Parastremma albumscientificCharacidae
- Parastremma pulchrumscientificCharacidae
- Parastremma sadinascientificCharacidae
- Parecbasis cyclolepisscientificCharacidae
- patacacommon — Gymnocorymbus thayeri
- Pearson's Characincommon — Bryconacidnus hemigrammus
- Pebbly Fishcommon — Alestes baremoze
- peixe-cachorrocommon — Oligosarcus brevioris
- Peixe-cachorrocommon — Oligosarcus paranensis
- Peixe-cadelacommon — Galeocharax gulo
- Peixe-cigarracommon — Galeocharax gulo
- Penguin tetracommon — Thayeria boehlkei
- Penguin Tetracommon — Thayeria ifati
- Penguin tetracommon — Thayeria obliqua
- Pepesca lacandonacommon — Astyanax ocotal
- Pequiracommon — Bryconamericus stramineus
- Pequira Tetracommon — Holoshesthes pequira
- Peridot Tetracommon — Jupiaba acanthogaster
- Peru Red Pencilfishcommon — Nannostomus mortenthaleri
- Peru tetracommon — Hyphessobrycon peruvianus
- Peruvian Tetracommon — Eretmobrycon peruanus
- Petén tetracommon — Astyanax petenensis
- Petersius conserialisscientificAlestidae
- Petitella bleheriscientificCharacidae
- Petitella georgiaescientificCharacidae
- Petitella rhodostomascientificCharacidae
- Peugeot Tetracommon — Hyphessobrycon peugeoti
- Phallobrycon adenacanthusscientificCharacidae
- Phantom Tetracommon — Megalamphodus megalopterus
- Phenacobrycon henniscientificCharacidae
- Phenacogaster apletostigmascientificCharacidae
- Phenacogaster beniscientificCharacidae
- Phenacogaster calvertiscientificCharacidae
- Phenacogaster capitulatascientificCharacidae
- Phenacogaster carteriscientificCharacidae
- Phenacogaster franciscoensisscientificCharacidae
- Phenacogaster guayupescientificCharacidae
- Phenacogaster jancupascientificCharacidae
- Phenacogaster lucenaescientificCharacidae
- Phenacogaster maculoblongascientificCharacidae
- Phenacogaster megalostictusscientificCharacidae
- Phenacogaster microstictusscientificCharacidae
- Phenacogaster napoatilisscientificCharacidae
- Phenacogaster nukakscientificCharacidae
- Phenacogaster ojitatascientificCharacidae
- Phenacogaster pectinatascientificCharacidae
- Phenacogaster prolatascientificCharacidae
- Phenacogaster retropinnusscientificCharacidae
- Phenacogaster simulatascientificCharacidae
- Phenacogaster suborbitalisscientificCharacidae
- Phenacogaster tegatusscientificCharacidae
- Phenacogaster tukanoscientificCharacidae
- Phenacogaster wayampiscientificCharacidae
- Phenacogaster wayanascientificCharacidae
- Phenacogaster yariscientificCharacidae
- Phenacogrammus aurantiacusscientificAlestidae
- Phenacogrammus concolorscientificAlestidae
- Phenacogrammus deheyniscientificAlestidae
- Phenacogrammus flexusscientificAlestidae
- Phenacogrammus interruptusscientificAlestidae
- Phenacogrammus majorsynonym — now Hemigrammopetersius major
- Phenacogrammus polliscientificAlestidae
- Phenacogrammus stigmaturascientificAlestidae
- Phenacogrammus urotaeniasynonym — now Hemigrammopetersius urotaenia
- Phenagoniates macrolepisscientificCharacidae
- Phoenix Tetracommon — Hemigrammus filamentosus
- Phoenix Tetracommon — Hyphessobrycon stegemanni
- Phycocharax rasborascientificCharacidae
- Piabacommon — Astyanax jacobinae
- Piabacommon — Hasemania diastatos
- Piabacommon — Hemigrammus gracilis
- Piabacommon — Hyphessobrycon iheringi
- Piabacommon — Hyphessobrycon latus
- Piabacommon — Moenkhausia barbouri
- Piabacommon — Psalidodon crenuchoides
- Piabacommon — Serrapinnus piaba
- Piaba da Lagoacommon — Hemigrammus gracilis
- Piaba do Córregocommon — Psalidodon rivularis
- piaba-rapaduracommon — Tetragonopterus franciscoensis
- Piabarchus analisscientificCharacidae
- Piabarchus torrenticolascientificCharacidae
- Piabina anhembiscientificCharacidae
- Piabina argenteascientificCharacidae
- Piabinhacommon — Hyphessobrycon piabinhas
- Piabinhacommon — Serrapinnus calliurus
- Piabuco Tetracommon — Piabucus dentatus
- Piabucus caudomaculatusscientificIguanodectidae
- Piabucus dentatusscientificIguanodectidae
- Piabucus melanostomascientificIguanodectidae
- Pike Tetracommon — Carlana eigenmanni
- Pike-Characincommon — Oligosarcus macrolepis
- pintonacommon — Bryconamericus tolimae
- Piquirãocommon — Aphyocharax dentatus
- Pisciculus Tetracommon — Cheirodon pisciculus
- Pittier's tetracommon — Moenkhausia pittieri
- Planaltina britskiiscientificCharacidae
- Planaltina glandipedisscientificCharacidae
- Planaltina kaingangscientificCharacidae
- Planaltina myersiscientificCharacidae
- Planalto Dogfish Characincommon — Oligosarcus planaltinae
- platinchocommon — Oligosarcus schindleri
- Pocha del Surcommon — Cheirodon australe
- Poll's Congo Tetracommon — Phenacogrammus polli
- Poptella abathesscientificCharacidae
- Poptella brevispinascientificCharacidae
- Poptella compressascientificCharacidae
- Poptella fortispinascientificCharacidae
- Poptella longipinnisscientificCharacidae
- Poptella magnuspinascientificCharacidae
- Poptella paraguayensisscientificCharacidae
- Poptella spinulascientificCharacidae
- Premature Tetracommon — Iotabrycon praecox
- Pretty Tetracommon — Hemigrammus pulcher
- Pretty Tetracommon — Moenkhausia bonita
- Priocharax ajuruscientificCharacidae
- Priocharax arielscientificCharacidae
- Priocharax britziscientificCharacidae
- Priocharax conwayiscientificCharacidae
- Priocharax marupiarascientificCharacidae
- Priocharax nanusscientificCharacidae
- Priocharax phasmascientificCharacidae
- Priocharax piagassuscientificCharacidae
- Priocharax pygmaeusscientificCharacidae
- Priocharax rexscientificCharacidae
- Priocharax robbieiscientificCharacidae
- Priocharax toledopizaescientificCharacidae
- Priocharax variiscientificCharacidae
- Prionobrama filigerascientificCharacidae
- Prionobrama paraguayensisscientificCharacidae
- Pristella ariporoscientificCharacidae
- Pristella maxillarisscientificCharacidae
- Pristella Tetracommon — Pristella maxillaris
- Procyon Tetracommon — Hyphessobrycon procyon
- Prodontocharax alleniscientificCharacidae
- Prodontocharax howesisynonym — now Amblystilbe howesi
- Prodontocharax melanotusscientificCharacidae
- Protocheirodon piscientificCharacidae
- Psalidodon alleniscientificCharacidae
- Psalidodon anisitsiscientificCharacidae
- Psalidodon balbusscientificCharacidae
- Psalidodon bifasciatussynonym — now Astyanax bifasciatus
- Psalidodon biotaesynonym — now Astyanax biotae
- Psalidodon bockmannisynonym — now Astyanax bockmanni
- Psalidodon chicosynonym — now Astyanax chico
- Psalidodon correntinusscientificCharacidae
- Psalidodon cremnobatessynonym — now Astyanax cremnobates
- Psalidodon crenuchoidesscientificCharacidae
- Psalidodon dissensussynonym — now Astyanax dissensus
- Psalidodon dissimilissynonym — now Astyanax dissimilis
- Psalidodon eigenmanniorumscientificCharacidae
- Psalidodon endysynonym — now Astyanax endy
- Psalidodon erythropterusscientificCharacidae
- Psalidodon fasciatusscientificCharacidae
- Psalidodon goyanensisscientificCharacidae
- Psalidodon gymnodontusscientificCharacidae
- Psalidodon gymnogenyssynonym — now Astyanax gymnogenys
- Psalidodon hamatusscientificCharacidae
- Psalidodon henselisynonym — now Astyanax henseli
- Psalidodon hermosussynonym — now Astyanax hermosus
- Psalidodon itasynonym — now Astyanax ita
- Psalidodon jequitinhonhaescientificCharacidae
- Psalidodon kalungascientificCharacidae
- Psalidodon laticepsscientificCharacidae
- Psalidodon leonidassynonym — now Astyanax leonidas
- Psalidodon marionaesynonym — now Astyanax marionae
- Psalidodon minorsynonym — now Astyanax minor
- Psalidodon ojiarasynonym — now Astyanax ojiara
- Psalidodon pampasynonym — now Astyanax pampa
- Psalidodon parahybaescientificCharacidae
- Psalidodon paranaescientificCharacidae
- Psalidodon pellegriniscientificCharacidae
- Psalidodon pessaliiscientificCharacidae
- Psalidodon powellisynonym — now Astyanax powelli
- Psalidodon pukasynonym — now Astyanax puka
- Psalidodon pynandisynonym — now Astyanax pynandi
- Psalidodon rivularisscientificCharacidae
- Psalidodon rutilusscientificCharacidae
- Psalidodon saguazusynonym — now Astyanax saguazu
- Psalidodon santaescientificCharacidae
- Psalidodon scabripinnisscientificCharacidae
- Psalidodon schubartisynonym — now Astyanax schubarti
- Psalidodon togoiscientificCharacidae
- Psalidodon troyasynonym — now Astyanax troya
- Psalidodon tumbayaensissynonym — now Astyanax tumbayaensis
- Psalidodon uaisosynonym — now Hyphessobrycon uaiso
- Psalidodon uberabascientificCharacidae
- Psalidodon varzeaesynonym — now Astyanax varzeae
- Psalidodon vermilionsynonym — now Astyanax vermilion
- Psalidodon xavantesynonym — now Astyanax xavante
- Psalidodon xirusynonym — now Astyanax xiru
- Pseudochalceus bohlkeiscientificCharacidae
- Pseudochalceus kyburziscientificCharacidae
- Pseudochalceus lineatusscientificCharacidae
- Pseudochalceus longianalisscientificCharacidae
- Pseudocheirodon arnoldiscientificCharacidae
- Pseudocheirodon terrabaescientificCharacidae
- Pseudocorynopoma doriaescientificCharacidae
- Pseudocorynopoma heterandriascientificCharacidae
- Pseudocorynopoma stanleyiscientificCharacidae
- Pterobrycon landoniscientificCharacidae
- Pterobrycon myrnaescientificCharacidae
- Ptychocharax rhyacophilascientificCharacidae
- Punkaycommon — Deuterodon potaroensis
- Purple Emperor Tetracommon — Inpaichthys kerri
- Purple Pencilfishcommon — Nannostomus rubrocaudatus
- Purple Phantom Tetracommon — Hyphessobrycon metae
- Purple Tetracommon — Hyphessobrycon metae
- Pygmy Hatchetfishcommon — Carnegiella myersi
- Pygmy Tetracommon — Odontostilbe dialeptura
- Pyrrhulina australisscientificLebiasinidae
- Pyrrhulina beniscientificLebiasinidae
- Pyrrhulina brevisscientificLebiasinidae
- Pyrrhulina capimscientificLebiasinidae
- Pyrrhulina eleanoraescientificLebiasinidae
- Pyrrhulina elongatascientificLebiasinidae
- Pyrrhulina filamentosascientificLebiasinidae
- Pyrrhulina laetascientificLebiasinidae
- Pyrrhulina lugubrisscientificLebiasinidae
- Pyrrhulina marilynaescientificLebiasinidae
- Pyrrhulina maximascientificLebiasinidae
- Pyrrhulina melanostomascientificLebiasinidae
- Pyrrhulina melanostomussynonym — now Pyrrhulina melanostoma
- Pyrrhulina obermulleriscientificLebiasinidae
- Pyrrhulina punctatascientificLebiasinidae
- Pyrrhulina rachovianascientificLebiasinidae
- Pyrrhulina semifasciatascientificLebiasinidae
- Pyrrhulina spilotascientificLebiasinidae
- Pyrrhulina stoliscientificLebiasinidae
- Pyrrhulina vittatascientificLebiasinidae
- Pyrrhulina zigzagscientificLebiasinidae
R
- Raccoon Tetracommon — Hyphessobrycon procyon
- Rachoviscus crassicepsscientificCharacidae
- Rachoviscus gracilicepsscientificCharacidae
- Rachow's Lizard Tetracommon — Iguanodectes rachovii
- Rachow's Pyrrhulinacommon — Pyrrhulina rachoviana
- Racoon tetracommon — Hyphessobrycon procyon
- Rainbow Characincommon — Rhoadsia minor
- Rainbow Emperor Tetracommon — Nematobrycon lacortei
- Rainbow emperor tetracommon — Nematobrycon palmeri
- Rainbow Tetracommon — Nematobrycon lacortei
- Ramirezella newboldiscientificCharacidae
- Ramirezella pyrophthalmascientificCharacidae
- Rathbun's bloodfincommon — Aphyocharax rathbuni
- Red Cearácommon — Megalamphodus micropterus
- Red Devil Tetracommon — Hyphessobrycon notidanos
- Red Laser Tetracommon — Hemigrammus coeruleus
- Red line tetracommon — Hemigrammus rubrostriatus
- Red line tetracommon — Hyphessobrycon amapaensis
- Red Minorcommon — Megalamphodus eques
- Red minor tetracommon — Megalamphodus eques
- Red Moenkhausiacommon — Moenkhausia rubra
- Red n Tetracommon — Gymnocorymbus bondi
- Red neon tetracommon — Paracheirodon axelrodi
- Red pencilfishcommon — Nannostomus beckfordi
- Red Phantom Tetracommon — Megalamphodus sweglesi
- Red spotted characincommon — Copeina guttata
- Red Spotted Splashing Characincommon — Pyrrhulina obermulleri
- Red tetracommon — Hyphessobrycon flammeus
- Red-back moon tetracommon — Bathyaethiops flammeus
- Red-base Tetracommon — Hemigrammus stictus
- Red-blue Colombian tetracommon — Hyphessobrycon columbianus
- Red-Blue Peru Tetracommon — Hyphessobrycon margitae
- Red-eye tetracommon — Bario sanctaefilomenae
- Red-finned Tetracommon — Astyanax trierythropterus
- Red-line lizard tetracommon — Iguanodectes geisleri
- Red-nosed tetracommon — Petitella rhodostoma
- Red-spotted Copeinacommon — Copella nattereri
- Red-stripe Hemigrammuscommon — Hemigrammus rubrostriatus
- Red-striped tetracommon — Petitella rhodostoma
- Red-tailed Flag Tetracommon — Hyphessobrycon agulha
- Redbanded Tetracommon — Hemigrammus rubrostriatus
- Redflank bloodfincommon — Aphyocharax rathbuni
- Redmouth Pencilfishcommon — Nannostomus nigrotaeniatus
- Redspotted copeinacommon — Copeina guttata
- Redtail Astyanaxcommon — Astyanax siapae
- Redtail Pencilfishcommon — Nannostomus erythrurus
- Rhabdalestes aeratisscientificAlestidae
- Rhabdalestes barnardiscientificAlestidae
- Rhabdalestes brevidorsalisscientificAlestidae
- Rhabdalestes maunensisscientificAlestidae
- Rhabdalestes rhodesiensisscientificAlestidae
- Rhabdalestes septentrionalisscientificAlestidae
- Rhabdalestes tangensisscientificAlestidae
- Rhabdalestes yokaiscientificAlestidae
- Rhinobrycon negrensisscientificCharacidae
- Rhinopetitia myersiscientificCharacidae
- Rhinopetitia potamorhachiascientificCharacidae
- Rhoadsia altipinnascientificCharacidae
- Rhoadsia minorscientificCharacidae
- Rio Meta Tetracommon — Hyphessobrycon metae
- Rio tetracommon — Hyphessobrycon flammeus
- Río Verde Tetracommon — Astyanax rioverde
- River Hatchetfishcommon — Gasteropelecus sternicla
- Roberts' Tetracommon — Moenkhausia robertsi
- Robertsi Tetracommon — Hyphessobrycon jackrobertsi
- Rocket Pencilfishcommon — Nannostomus eques
- Rodway's Tetracommon — Hemigrammus rodwayi
- Roeboexodon geryiscientificCharacidae
- Roeboexodon guyanensisscientificCharacidae
- Roeboides affinisscientificCharacidae
- Roeboides araguaitoscientificCharacidae
- Roeboides biserialisscientificCharacidae
- Roeboides bouchelleiscientificCharacidae
- Roeboides bussingiscientificCharacidae
- Roeboides cartiscientificCharacidae
- Roeboides dayiscientificCharacidae
- Roeboides descalvadensisscientificCharacidae
- Roeboides dientonitoscientificCharacidae
- Roeboides disparscientificCharacidae
- Roeboides guatemalensisscientificCharacidae
- Roeboides ilseaescientificCharacidae
- Roeboides loftiniscientificCharacidae
- Roeboides margareteaescientificCharacidae
- Roeboides microlepisscientificCharacidae
- Roeboides myersiiscientificCharacidae
- Roeboides numerosusscientificCharacidae
- Roeboides occidentalisscientificCharacidae
- Roeboides oligistosscientificCharacidae
- Roeboides prognathussynonym — now Roeboides affinis
- Roeboides sazimaiscientificCharacidae
- Roeboides xenodonscientificCharacidae
- Rosaceus Tetracommon — Hyphessobrycon rosaceus
- Rosy Tetracommon — Hyphessobrycon bentosi
- Rosy Tetracommon — Hyphessobrycon rosaceus
- Rosy Tetra (variant)common — Hyphessobrycon copelandi
- Rough-finned Astyanaxcommon — Psalidodon scabripinnis
- Royal Tetracommon — Inpaichthys kerri
- Ruby tetracommon — Axelrodia riesei
- Rummy-nose tetracommon — Petitella bleheri
- Rummynose tetracommon — Petitella bleheri
- Rummynose tetracommon — Petitella rhodostoma
- Rupununi Glass Headstandercommon — Charax rupununi
- Rupununi Tetracommon — Astyanax rupununi
- Rutilus Tetracommon — Psalidodon rutilus
S
- Sabaletescommon — Astyanax belizianus
- Sabre tetracommon — Roeboides guatemalensis
- Saccoderma hastatascientificCharacidae
- Saccoderma melanostigmascientificCharacidae
- Saccoderma robustascientificCharacidae
- Sadler's Tetracommon — Brachyalestes sadleri
- Saicangacommon — Charax michaeli
- Sailfin Tetracommon — Markiana nigripinnis
- Saint Filomena tetracommon — Bario sanctaefilomenae
- Salvin's Tetracommon — Astyanax aeneus
- Sapphire Tetracommon — Acrobrycon ipanquianus
- sardinacommon — Argopleura conventa
- Sardinacommon — Astyanax belizianus
- Sardinacommon — Creagrutus nigrostigmatus
- Sardinacommon — Eretmobrycon peruanus
- Sardinacommon — Hemibrycon polyodon
- sardinacommon — Lebiasina chucuriensis
- Sardinacommon — Stethaprion erythrops
- Sardina Blancacommon — Astyanax anai
- Sardina de Bussingcommon — Roeboides bussingi
- Sardina de Ríocommon — Astyanax belizianus
- Sardina de Vidriocommon — Roeboides bussingi
- Sardina Laguneracommon — Astyanax nasutus
- Sardinecommon — Hemibrycon taeniurus
- Sardine Tetracommon — Moenkhausia gracilima
- sardinitacommon — Argopleura conventa
- Sardinitacommon — Bryconamericus cinarucoense
- Sardinitacommon — Gephyrocharax atracaudatus
- Sardinitacommon — Hyphessobrycon tortuguerae
- Sardinitacommon — Odontostilbe dialeptura
- Sardinitacommon — Odontostilbe mitoptera
- Sardinita beliceñacommon — Astyanax belizianus
- Sardinita ciegacommon — Astyanax jordani
- Sardinita de Acatláncommon — Astyanax acatlanensis
- sardinita de Veracruzcommon — Astyanax finitimus
- Sardinita del Aroa y Yaracuycommon — Bryconamericus charalae
- Sardinita del Cubilhuitzcommon — Astyanax cubilhuitz
- sardinita del Macalcommon — Astyanax macal
- Savanna Tetracommon — Hyphessobrycon stegemanni
- Scale-eater Tetracommon — Roeboides numerosus
- Scale-eating Tetracommon — Roeboides occidentalis
- Scaly-finned Tetracommon — Psalidodon scabripinnis
- Scaly-line Characincommon — Gymnocharacinus bergii
- Scarlet tetracommon — Hyphessobrycon amapaensis
- Scheerer's Hatchetfishcommon — Carnegiella schereri
- Schindler's Toothycommon — Oligosarcus schindleri
- Schmard Tetracommon — Hemigrammus schmardae
- Scholze's Tetracommon — Hyphessobrycon scholzei
- Schouteden's African Tetracommon — Brycinus schoutedeni
- Schultzites axelrodiscientificCharacidae
- Scissor macrocephalusscientificCharacidae
- Scopaeocharax atopodusscientificCharacidae
- Scopaeocharax rhinodusscientificCharacidae
- Scratched Inpa Tetracommon — Inpaichthys parauapiranga
- Semaphore Tetracommon — Pterobrycon myrnae
- Serpae Tetracommon — Megalamphodus eques
- Serrabrycon magoiscientificCharacidae
- Serrapinnus asterscientificCharacidae
- Serrapinnus calliurusscientificCharacidae
- Serrapinnus gracilisscientificCharacidae
- Serrapinnus heterodonscientificCharacidae
- Serrapinnus kriegiscientificCharacidae
- Serrapinnus littorisscientificCharacidae
- Serrapinnus lucindaiscientificCharacidae
- Serrapinnus malabarbaiscientificCharacidae
- Serrapinnus microdonscientificCharacidae
- Serrapinnus micropterusscientificCharacidae
- Serrapinnus notomelasscientificCharacidae
- Serrapinnus piabascientificCharacidae
- Serrapinnus potiguarscientificCharacidae
- Serrapinnus sterbaiscientificCharacidae
- Serrapinnus tocantinensisscientificCharacidae
- Serrapinnus zanataescientificCharacidae
- Sharp-snouted dogtooth tetracommon — Oligosarcus acutirostris
- Sharptooth Tetracommon — Micralestes acutidens
- Shining Pencilfishcommon — Nannostomus nitidus
- Shiny Copper Tetracommon — Hemigrammus cupreus
- Short Pyrrhulinacommon — Pyrrhulina brevis
- Short Tiger Fishcommon — Hydrocynus brevis
- Short-snouted Astyanaxcommon — Astyanax brevirhinus
- Siapa Astyanaxcommon — Astyanax siapae
- Siapa Tetracommon — Astyanax siapae
- Sickle Tetracommon — Hyphessobrycon jackrobertsi
- Sickle-fin Alestescommon — Alestes dentex
- Sierra del Divisor Characincommon — Hemibrycon divisorensis
- Sierra Leone dwarf characincommon — Ladigesia roloffi
- Signal Stripe Moenkhausiacommon — Moenkhausia costae
- Signal Tetracommon — Moenkhausia hemigrammoides
- Silver Cynopotamuscommon — Cynopotamus argenteus
- Silver hatchetcommon — Gasteropelecus sternicla
- Silver Hatchetfishcommon — Gasteropelecus levis
- Silver hatchetfishcommon — Thoracocharax securis
- Silver Piabinacommon — Piabina argentea
- Silver tetracommon — Ctenobrycon spilurus
- Silver Tetracommon — Gymnocorymbus bondi
- silver tetracommon — Gymnocorymbus thayeri
- Silver Tetracommon — Micralestes argyrotaenia
- Silver Tetracommon — Tetragonopterus argenteus
- Silver Toothycommon — Oligosarcus argenteus
- silver widow tetracommon — Gymnocorymbus thayeri
- Silver-tip Tetracommon — Hasemania melanura
- Silver-tipped tetracommon — Hasemania nana
- Silverside Bryconopscommon — Bryconops alburnoides
- Silversidescommon — Alestes baremoze
- Silvertip Tetracommon — Hasemania melanura
- Silvertip Tetracommon — Hasemania nana
- Silvery Tetracommon — Tetragonopterus argenteus
- Single-banded pencilfishcommon — Nannostomus unifasciatus
- Single-spot Characincommon — Charax unimaculatus
- Single-stripe Tetracommon — Astyanax unitaeniatus
- Six-eyed Tetracommon — Phenacogaster tegatus
- Six-line Tetracommon — Hyphessobrycon hexastichos
- Slender Lizardfish Tetracommon — Iguanodectes gracilis
- Slender Robbercommon — Rhabdalestes rhodesiensis
- Slender tetracommon — Iguanodectes spilurus
- Slender Tigerfishcommon — Hydrocynus forskahlii
- Slender-headed Tetracommon — Rachoviscus graciliceps
- Small-mouthed Tetracommon — Hemigrammus microstomus
- Small-scale Astyanaxcommon — Astyanax microlepis
- Small-scale Glass Tetracommon — Charax michaeli
- Small-scaled Tetracommon — Mimagoniates microlepis
- Small-toothed Characincommon — Serrapinnus microdon
- Smallmouth Characincommon — Aphyocharax pusillus
- Smallscale characincommon — Roeboides microlepis
- Socolof's tetracommon — Hyphessobrycon socolofi
- Southern Moenkhausiacommon — Bario australis
- Southern Splash Tetracommon — Pyrrhulina australis
- Spectacled Characincommon — Roeboides affinis
- Splash Tetracommon — Copella arnoldi
- Splashing Tetracommon — Copella arnoldi
- Spot-tailcommon — Brachyalestes imberi
- Spotfin Hatchetfishcommon — Thoracocharax stellatus
- Spotted hatchetfishcommon — Gasteropelecus maculatus
- Spotted Splash Tetracommon — Copella compta
- Steel Blue Tetracommon — Hyphessobrycon weitzmanorum
- Steel Tetracommon — Gephyrocharax melanocheir
- Sterba's Tetracommon — Serrapinnus sterbai
- Stethaprion crenatumscientificCharacidae
- Stethaprion erythropsscientificCharacidae
- Stichonodon insignisscientificCharacidae
- Stoli's Pyrrhulinacommon — Pyrrhulina stoli
- Straw Tetracommon — Hyphessobrycon stramineus
- Striped Alestescommon — Brachyalestes taeniurus
- Striped Robbercommon — Brachyalestes lateralis
- Striped Tetracommon — Astyanax lineatus
- Stygichthys typhlopsscientificCharacidae
- Sumutetracommon — Moenkhausia comma
- Superb Astyanaxcommon — Astyanax superbus
- Surf Toothycommon — Oligosarcus brevioris
- Surinam Moenkhausiacommon — Moenkhausia surinamensis
- Suriname Green Line Scissors Lampcommon — Hemigrammus boesemani
- Swordtail Characincommon — Corynopoma riisei
- Swordtail Tetracommon — Corynopoma riisei
T
- Tail-light Tetracommon — Bryconops melanurus
- Tailspot Tetracommon — Bryconops caudomaculatus
- Tamiahua Tetracommon — Astyanax tamiahua
- Tanzanian Tigerfishcommon — Hydrocynus tanzaniae
- Tarpon Tetracommon — Astyanax tarpon
- Tetracommon — Jupiaba keithi
- tetra chumbinhocommon — Hyphessobrycon plumbellus
- Tétra de Guyanecommon — Hemigrammus guyanensis
- Tetra from Riocommon — Hyphessobrycon flammeus
- tetra sinamajskácommon — Hyphessobrycon sovichthys
- Tetra-pascacommon — Paragoniates alburnus
- Tetragonopterus anostomusscientificCharacidae
- Tetragonopterus araguaiensisscientificCharacidae
- Tetragonopterus argenteusscientificCharacidae
- Tetragonopterus carvalhoiscientificCharacidae
- Tetragonopterus chalceusscientificCharacidae
- Tetragonopterus daguaesynonym — now Astyanax daguae
- Tetragonopterus denticulatusscientificCharacidae
- Tetragonopterus franciscoensisscientificCharacidae
- Tetragonopterus georgiaescientificCharacidae
- Tetragonopterus juruenascientificCharacidae
- Tetragonopterus kuluenescientificCharacidae
- Tetragonopterus manaosscientificCharacidae
- Tetragonopterus ommatusscientificCharacidae
- Tetragonopterus rarusscientificCharacidae
- Tetragonopterus signatusscientificCharacidae
- Texan Tetracommon — Astyanax argentatus
- Thayer's tetracommon — Gymnocorymbus thayeri
- Thayeria boehlkeiscientificCharacidae
- Thayeria ifatiscientificCharacidae
- Thayeria obliquascientificCharacidae
- Thoracocharax securisscientificGasteropelecidae
- Thoracocharax stellatusscientificGasteropelecidae
- Thread Tetracommon — Bryconella pallidifrons
- Three-lined pencilfishcommon — Nannostomus trifasciatus
- Three-stripe pencilfishcommon — Nannostomus trifasciatus
- Thrissobrycon pectiniferscientificCharacidae
- Tiger Fishcommon — Hydrocynus vittatus
- Tigerfishcommon — Hydrocynus vittatus
- Toothy Tetracommon — Oligosarcus macrolepis
- Torpedo Robbercommon — Alestes macrophthalmus
- Tortuguero Tetracommon — Hyphessobrycon tortuguerae
- Tricuspidalestes caeruleusscientificAlestidae
- Trident Tetracommon — Hemigrammus tridens
- Trochilocharax ornatusscientificCharacidae
- True big-scale tetracommon — Brycinus macrolepidotus
- True bloodfincommon — Aphyocharax anisitsi
- True rummynose tetracommon — Petitella rhodostoma
- Tubemouth Pencilfishcommon — Nannostomus eques
- Tucano tetracommon — Tucanoichthys tucano
- Tucanoichthys tucanoscientificCharacidae
- Turbo Tetracommon — Creagrutus yudja
- Two-lined Pencilfishcommon — Nannostomus bifasciatus
- Two-lined Tetracommon — Coptobrycon bilineatus
- Two-spot Alestescommon — Brachyalestes bimaculatus
- Two-spot astyanaxcommon — Astyanax bimaculatus
- Two-spotted Alestidcommon — Brachyalestes bimaculatus
- Two-stripe Pencilfishcommon — Nannostomus digrammus
- Two-striped Astyanaxcommon — Astyanax bifasciatus
- Twospot astyanaxcommon — Astyanax bimaculatus
- Twospot Lebiasinacommon — Lebiasina bimaculata
- Twospotted Lebiasinacommon — Lebiasina bimaculata
- Twostripe Pencilfishcommon — Nannostomus bifasciatus
- Twostripe Pencilfishcommon — Nannostomus digrammus
- Tyttobrycon dorsimaculatusscientificCharacidae
- Tyttobrycon hamatusscientificCharacidae
- Tyttobrycon marajoarascientificCharacidae
- Tyttobrycon spinosusscientificCharacidae
- Tyttobrycon xeruiniscientificCharacidae
- Tyttocharax cochuiscientificCharacidae
- Tyttocharax madeiraescientificCharacidae
- Tyttocharax metaescientificCharacidae
- Tyttocharax tambopatensisscientificCharacidae
U
- Uberaba Tetracommon — Psalidodon uberaba
- Ulrey's Tetracommon — Hemigrammus ulreyi
- Urquishocommon — Pyrrhulina beni
- Uruguay tetracommon — Cheirodon interruptus
V
- Valencia Tetracommon — Gephyrocharax valencia
- Variable Tetracommon — Hyphessobrycon mutabilis
- Varicharax nigrolineatusscientificCharacidae
- Variegated Lizard Tetracommon — Iguanodectes variatus
- Venezuelan Tetracommon — Gephyrocharax venezuelae
- Veracruz tetracommon — Astyanax finitimus
- Vilma's Copellacommon — Copella vilmae
- Vilma's Tetracommon — Copella vilmae
- Vilma's Tetracommon — Hyphessobrycon vilmae
W
- Wayana Tetracommon — Phenacogaster wayana
- Weitzman's Odontostilbecommon — Odontostilbe weitzmani
- Western Characincommon — Micralestes occidentalis
- Western Characincommon — Roeboides occidentalis
- Whiteline Tetracommon — Hyphessobrycon albolineatum
- Whitestriped Tetracommon — Hyphessobrycon albolineatum
- Wolf Tetracommon — Galeocharax gulo
X
- X-ray Fishcommon — Pristella maxillaris
- X-ray Tetracommon — Pristella maxillaris
- Xenagoniates bondiscientificCharacidae
- Xenurobrycon coracoralinaescientificCharacidae
- Xenurobrycon heterodonscientificCharacidae
- Xenurobrycon macropusscientificCharacidae
- Xenurobrycon polyancistrusscientificCharacidae
- Xenurobrycon pteropusscientificCharacidae
- Xenurobrycon variiscientificCharacidae
- Xingu Tetracommon — Moenkhausia xinguensis
Y
- Yariguíes Tetracommon — Astyanax yariguies
- Yekwana Bloodfin Tetracommon — Aphyocharax yekwanae
- Yellow Congo Tetracommon — Alestopetersius caudalis
- Yellow Phantom Tetracommon — Hyphessobrycon roseus
- Yellow Tetracommon — Hyphessobrycon bifasciatus
- Yellow-banded moenkhausiacommon — Bario sanctaefilomenae
- Yellow-fin Tetracommon — Brycinus leuciscus
- Yellow-fin Tetrascommon — Brycinus leuciscus
- Yellowtail Lambaricommon — Astyanax jacuhiensis
- Yellowtail Tetracommon — Alestopetersius caudalis
- Yellowtail Tetracommon — Astyanax altiparanae
- Yucatan Tetracommon — Astyanax altior
Z
- Zig-zag Tetracommon — Hyphessobrycon hexastichos
- Zigzag Pyrrhulinacommon — Pyrrhulina zigzag