Taxonomy & naming
Enteromius amanpoae was described by Jacques Lambert in 1961. The species was originally placed in the broad genus Barbus or Puntius, catch-all groupings that historically absorbed nearly all African and Asian small barbs. Following revisions that disaggregated the old Puntius complex — most significantly from around 2012 onward — the African species in this lineage were referred to Enteromius, the genus under which Eschmeyer's Catalog of Fishes (the authority for valid names) records the current combination Enteromius amanpoae (Lambert, 1961), with the parenthetical authority marking the transfer out of Lambert's original genus assignment.
Enteromius is one of the largest genera of African freshwater fishes, encompassing several hundred species of small to medium barbs distributed across the continent from the Sahel to southern Africa. Many of these species are closely related and morphologically similar, and the group as a whole remains incompletely revised. E. amanpoae is among the lesser-known members, with a sparse literature and no common name in established use.
Morphology
Specific morphological data for Enteromius amanpoae in the public literature are limited. It is a small barb of the typical Enteromius body plan: moderately elongate, laterally compressed, with a rounded snout, a subterminal to terminal mouth, and the characteristic single row of pharyngeal teeth. The dorsal fin is short-based, the caudal fin forked. Coloration in life is not documented in accessible sources; most small Enteromius display a silvery or pale-olive ground color, often with dark lateral spots or a mid-lateral stripe, though without specimen examination or photographs the pattern of E. amanpoae cannot be stated with confidence.
Size data are absent from the available literature. Small Enteromius species typically reach 1.5–3 in total length at maturity, and a similar range is plausible for E. amanpoae pending published records.
Habitat
The precise native range and habitat of Enteromius amanpoae are not fully documented in accessible sources. The species name and its 1961 description by Lambert suggest an African provenance consistent with Central or West African drainage — regions where Lambert conducted considerable ichthyological work — though the specific river basin is not established here from cache data.
African Enteromius of this type typically inhabit flowing freshwater: streams, small rivers, and their marginal areas, often over sandy or gravelly substrates with riparian vegetation. Water chemistry varies widely across the African interior from soft, slightly acid forest streams to harder, more alkaline savanna rivers. Without specific collection data, no precise temperature or pH figures can be stated.
Feeding
No published feeding data specific to Enteromius amanpoae have been located. Small Enteromius species are generally omnivorous opportunists, taking a mixture of small aquatic invertebrates (insect larvae, microcrustaceans, worms), algae, plant material, and organic detritus. This generalist approach is characteristic of the genus across its African range and allows these fishes to exploit the seasonal and spatial variation in food availability typical of African river systems.
In an aquarium setting, a varied diet covering dried flakes or small pellets supplemented with live or frozen invertebrates and some vegetable matter would align with the dietary habits of closely related African Enteromius.
Mating
Enteromius amanpoae, like all barbs, is an egg-scattering, non-guarding spawner. No nest is constructed, no pair bond persists beyond spawning, and no parental care is provided. Courtship involves a male driving and pursuing a gravid female through vegetation or over open substrate until eggs and milt are released simultaneously. The eggs scatter and sink, adhering to plants, gravel, or the substrate surface.
Spawning in African river barbs is often linked to seasonal cues — rising water temperatures, increased flow, or the onset of the rainy season — that concentrate fish in suitable habitat and synchronise reproductive condition across the population.
Breeding
No captive-breeding records for Enteromius amanpoae appear in the accessible literature, and the species is not an established aquarium fish. By analogy with congeners, spawning would involve the scattering of small adhesive eggs among fine-leaved vegetation or over the substrate, with eggs and subsequent larvae receiving no parental attention. Adults may eat their own eggs, as is typical across the barb family.
In the wild, egg development is presumably rapid in warm water, with larvae becoming free-swimming within a few days of hatching and initially feeding on infusoria-sized organisms before graduating to larger prey.
In the aquarium
Enteromius amanpoae does not appear in the mainstream aquarium trade and is not an established hobby species. It belongs to a large genus of African barbs that are rarely exported, the great majority of which are known only from scientific collections. No husbandry notes are available in accessible sources.
If encountered, the general care requirements appropriate to small African Enteromius would apply: a well-filtered aquarium with moderate current, subdued lighting, a sandy or fine-gravel substrate, some plant cover, and a diet of varied small foods. The species should be kept in a shoal, as is appropriate for all barbs, to reduce stress and encourage natural behaviour.
Conservation
Enteromius amanpoae has not been assessed by the IUCN Red List, and no conservation status has been established for the species. Many small, range-restricted African Enteromius remain in this position — Data Deficient or simply unevaluated — because museum material is limited, range boundaries are poorly defined, and field surveys have not been carried out at the resolution needed for a formal assessment.
The broader threats affecting African freshwater biodiversity — catchment deforestation, agricultural runoff, water extraction, and dam construction — apply in principle to any narrow-range stream fish, though the actual vulnerability of E. amanpoae cannot be assessed without baseline distribution and population data.