Taxonomy & naming
Pseudocurimata lineopunctata was described by the Belgian-British ichthyologist George Albert Boulenger in 1911. It belongs to the family Curimatidae — the toothless, detritivorous "curimatas" — within the order Characiformes, a family that sits alongside the pacus, silver dollars and hemiodontids in the broader minor-characin assemblage covered by this group. The Catalog of Fishes (Eschmeyer, California Academy of Sciences) is the governing authority for the valid combination Pseudocurimata lineopunctata; the cached sources for this account did not surface any competing generic placement or synonymy to flag, so the name is treated here as currently accepted.
Curiously little has been published on this species since its description. FishBase, GBIF and NCBI Taxonomy all carry the name with consistent basic taxonomic data, but none records a body of subsequent taxonomic revision, and the only substantive biological account available is a regional fisheries study from the Río Anchicayá in Colombia. That scarcity of literature is itself informative: this is a narrow-range, little-studied member of a large family, not a poorly known synonym of something more familiar.
Morphology
As a curimatid, Pseudocurimata lineopunctata has the family's characteristic toothless mouth — jaws with no functional dentition, built for grazing rather than seizing prey — and a slender, compressed, silvery body typical of small demersal characins. FishBase gives a maximum size of 4.5 in standard length for males and unsexed individuals, while the Río Anchicayá study records total lengths spanning 4–6.5 in and finds that females run larger than males, reaching sexual maturity around 3.5 in and males around 4 in.
Beyond these length figures, the cached sources do not provide a detailed account of fin counts, colour pattern or other diagnostic morphology, and this article does not invent one. The species epithet lineopunctata ("line-spotted") suggests a lined or spotted flank pattern, consistent with other Curimatidae, but no source in hand confirms specific colouration details, so that is flagged as an inference from the name rather than a documented fact.
Habitat
Pseudocurimata lineopunctata is confirmed from Pacific-slope drainages of Colombia and Ecuador: FishBase cites the San Juan, Dagua and Atrato river systems in Colombia and northeastern Esmeraldas province in Ecuador as its range, and GBIF occurrence records corroborate a South American distribution restricted to Colombia and Ecuador. This is a comparatively narrow range for a curimatid, confined to a cluster of adjacent river basins rather than spread across a major continental system like the Amazon or Orinoco.
The Río Anchicayá study describes the species using pools and low-current stretches of water over sediment, at an ambient river temperature around 79 °F — habitat consistent with a bottom-oriented grazer that favours calmer water where organic sediment accumulates. FishBase lists tropical conditions of roughly 73–81 °F and pH 5.5–7.0 for the species, mildly acidic to neutral water typical of Neotropical Pacific-slope rivers; it does not describe an extreme blackwater environment, and no source suggests one.
Feeding
No source in the cache documents gut-content or diet data specific to Pseudocurimata lineopunctata. What can be said comes from the family: Curimatidae are detritivorous, toothless characins that feed by grazing flocculated organic matter, microdetritus, microvegetation, filamentous algae, microcrustaceans and the slime films coating submerged surfaces and sediment. Its pooled, low-current, sediment-rich habitat is consistent with that feeding style, but this is a family-level inference, not a species-specific finding, and is presented as such.
In the absence of aquarium-trade experience with this species, no husbandry-tested diet can be offered; a keeper working from the family's known biology would reasonably expect it to take fine sinking foods, algae-based wafers and detritus-mimicking prepared diets rather than meaty or predatory fare, but this is inference, not documented practice.
Mating
The Río Anchicayá study is the only source with reproductive data, and it describes population-level spawning timing rather than courtship behaviour: spawning activity peaks twice a year, in June–July and again in September–October, coinciding with seasonal hydrological patterns in the Río Anchicayá. Sexual maturity is reached at roughly 3.5 in total length in females and 4 in in males, and average fecundity is cited at approximately 3,598 oocytes per female.
No source describes pairing behaviour, courtship displays, external sexual dimorphism beyond the size difference (females run larger than males), or nest-site selection for this species. Data is sparse here, and this account does not speculate beyond what the fisheries study reports.
Breeding
Pseudocurimata lineopunctata is not documented as bred in aquaria in any source consulted for this account, and none of the cached material describes egg deposition, parental care, or larval rearing. The only breeding-relevant data is the seasonal spawning-peak and fecundity information from the Río Anchicayá study noted above, which describes a wild population rather than a captive one. Curimatidae more broadly are generally understood as open-water or benthic egg-scatterers with no parental care, consistent with the family's grazing, non-nesting lifestyle, but this article does not assign that mode to P. lineopunctata specifically without direct evidence, and instead states plainly that its breeding mode has not been documented in the sources available. This is a species essentially unknown in captive breeding — there is no hobby or commercial breeding record to draw on.
In the aquarium
Pseudocurimata lineopunctata has no meaningful presence in the aquarium hobby that the cached sources reveal — no common trade name, no care-guide literature, and no hobbyist accounts were found. Given its modest adult size (up to roughly 6.5 in total length in the wild, more commonly under that in the aquarium-relevant standard-length figures) and its grazing, detritivorous habits as a curimatid, it would in principle suit a modestly sized, warm (around 73–81 °F), mildly acidic-to-neutral (pH 5.5–7.0) planted or driftwood-furnished setup with soft sediment and gentle flow, kept in a group as most small characins are. That is a reasonable extrapolation from its family and documented habitat, not a verified care regime, and this article does not claim otherwise.
Prospective keepers should treat this as a species essentially absent from the trade: sourcing would likely mean wild-collected specimens from Colombia or Ecuador rather than any commercially farmed stock, and no husbandry track record exists to draw on beyond general curimatid practice.
Conservation
The IUCN Red List assessment for Pseudocurimata lineopunctata is Least Concern at the global level, per the cached FishBase and GBIF records. The Río Anchicayá study, however, flags a more precarious local picture within Colombia, describing the species as vulnerable there due to its restricted distribution and ongoing habitat loss along the Pacific-slope drainages it depends on.
That gap between a global Least Concern listing and a locally vulnerable population is a common pattern for narrow-range Neotropical fish assessed at wide taxonomic scale: the species is not in imminent danger of extinction range-wide, but the specific Colombian rivers it inhabits face real pressure, and continued monitoring of those populations would be warranted rather than assuming the global status covers the local reality.