HomeFish encyclopediaRay-finned fishesKnifefishesBluntnose knifefishesBluntnose knifefish Bluntnose knifefish (Brachyhypopomus brevirostris) Scientific name: Brachyhypopomus brevirostris Steindachner, 1868 The Bluntnose knifefish (Brachyhypopomus brevirostris) is a freshwater fish of the family Hypopomidae. Native range: South America, Orinoco River and Rio de la Plata, Amazon in Peru. BiologyAssociated with emergent and floating vegetation. Maximum length reported to reach 42 cm TL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBrachyhypopomus brevirostrisFamilyHypopomidae (Bluntnose knifefishes)OrderGymnotiformes (Knifefishes)ClassActinopterygii (Ray-finned fishes)Maximum length34.7EnvironmentFreshwater; benthopelagicClimateTropicalDistributionSouth America: Orinoco River and Rio de la Plata, Amazon in Peru.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026