Taxonomy & naming
Citharinus latus was described by Johannes Müller and Franz Hermann Troschel in 1844, part of an early wave of European description of West and Central African freshwater fishes. It sits in the genus Citharinus, within the family Citharinidae — a family confined to Africa and distinct from the much larger, mostly South American Characidae and Serrasalmidae (the piranhas, pacus and tetras) despite the shared order Characiformes. The Catalog of Fishes (Eschmeyer, California Academy of Sciences) is the governing authority for the valid name and combination.
The citharinids are often described loosely as "African characins," a useful catch-all that also covers the related Distichodontidae (Distichodus and kin) and the predatory Hepsetidae (African pike-characins), but the three families differ sharply in body plan and habit. Citharinus species, including C. latus, are deep-bodied, laterally compressed grazers rather than predators, and several species in the genus are similar enough in general appearance that field identification relies on fin-ray counts and proportions rather than obvious external markers.
Morphology
Citharinus latus has the classic citharinid silhouette: a tall, strongly laterally compressed, silvery body with a small, blunt head and a small, non-protrusible mouth suited to grazing rather than seizing prey. FishBase records a maximum length of 33 in standard length and a maximum weight of 2.5 kg, making it one of the larger species in its genus and a genuinely substantial fish at full size, though most fish encountered in the wild and in the trade are considerably smaller than that upper figure. Fin counts are part of how the species is distinguished from its close relatives: FishBase lists 20–23 dorsal soft rays and 23–26 anal soft rays.
Colouration is unremarkable and functional — a bright, uniform silver flank typical of open-water and floodplain fishes, without the bold patterning or fin coloration seen in many aquarium characins. The body depth and compressed profile are the fish's most distinctive visual features, giving it a superficial resemblance to a large silver dollar or a deep-bodied bream rather than to a piranha or tetra.
Habitat
Citharinus latus has a broad West and Central African distribution, recorded from the Senegal and Casamance rivers, the Niger and Volta basins, the Chad basin, coastal rivers of Guinea-Bissau, Togo and Benin, the Nile, and Lake Albert. Across this range it occupies slow-moving rivers, seasonal floodplains and freshwater lakes rather than fast, well-oxygenated streams, and like many floodplain characins it is closely tied to the seasonal flood pulse of its river systems.
Water across this range is generally warm, and available sources describe conditions as soft to moderately hard and slightly acidic to neutral, though precise temperature and pH figures specific to C. latus were not located in the sources consulted for this account. Structurally, floodplain and river-margin vegetation is important: wild spawning is reported to take place in shallow, vegetated areas during the rainy season, underlining the species' reliance on seasonal flooding for reproduction.
Feeding
Citharinus latus is an omnivorous grazer rather than a hunter. In the wild it feeds on small invertebrates, plant matter and detritus, consistent with the citharinid family's general role as algae- and detritus-grazing fish across African floodplain and river systems — a very different feeding niche from the fin-nipping or predatory habits associated with South American piranhas and pike-characins.
In the aquarium this omnivorous, plant-leaning diet should be reflected directly: keepers are advised to offer high-quality pellets and flakes, live or frozen foods such as bloodworm and brine shrimp, and a substantial share of vegetable matter such as spinach and peas. A diet skewed too heavily toward protein and away from vegetable matter is a mismatch for a fish whose natural diet leans on plant material and detritus.
Mating
Little species-specific detail on courtship behaviour in Citharinus latus was located in the sources consulted for this account. What is documented is timing and habitat: wild spawning is reported to occur during the rainy season, in shallow, vegetated areas of its floodplain and river habitat, which is the typical pattern for African floodplain characins that synchronise reproduction with the seasonal flood pulse rather than breeding year-round.
No reliable account of external sexual dimorphism in this species was found in the sources reviewed; this is consistent with the citharinids generally, where the sexes are not obviously distinguished by colour or fin shape.
Breeding
Citharinus latus is, like other members of its genus and the related Distichodus, an egg-scattering species associated with seasonal, vegetated floodplain spawning rather than any form of nest-building, mouthbrooding or sustained parental care. Breeding in captivity is reported to be rare and challenging, and this species should be considered essentially unbred in the home aquarium.
Given the fish's large adult size, its reliance on seasonal flood conditions to trigger spawning, and the near-total absence of documented captive-breeding success, prospective keepers should not expect to breed this species and should assume that any specimens in the trade are wild-caught or, at best, farmed rather than hobbyist-bred.
In the aquarium
The defining fact for any prospective keeper is size: Citharinus latus can reach 33 in standard length and 2.5 kg, and even allowing for aquarium specimens typically falling well short of that extreme, this is a fish that outgrows the vast majority of home tanks. Retailers recommend a minimum of roughly 200 US gallons (around 200 US gal) with ample open swimming space, reflecting both its adult bulk and its laterally compressed, active-swimming build.
Feeding should follow its omnivorous, plant-leaning wild diet: a mix of quality pellets and flakes, occasional live or frozen protein such as bloodworm and brine shrimp, and regular vegetable matter such as spinach and peas. As a peaceful grazer rather than a predator, it is not a fish that threatens tankmates in the way piranhas or pike-characins can, but its size alone rules it out for anything but a large, specialist setup, and keepers should be clear-eyed that a young specimen bought small will need a correspondingly enormous tank as an adult.
Conservation
Citharinus latus is assessed as Least Concern by the IUCN Red List, consistent with its wide distribution across major West and Central African river systems — the Senegal, Niger, Volta, Chad basin, Nile and Lake Albert among them — and its presumed broad population base across that range. A specific assessment year was not located in the sources consulted for this account.
As a large-bodied floodplain species, C. latus is also a food fish across parts of its range, and its conservation outlook, while currently favourable, sits within the broader set of pressures facing African floodplain rivers — damming, altered flood regimes and habitat modification — that affect flood-pulse-dependent species generally, even where the species itself is not currently classified as threatened.