HomeFreshwater aquarium fishCatfish & plecosBottlenose catfish Bottlenose catfish (Ageneiosus marmoratus) Scientific name: Ageneiosus marmoratus Eigenmann, 1912 The Bottlenose catfish (Ageneiosus marmoratus) is a freshwater fish of the family Auchenipteridae. In the aquarium it needs water at 23–26°C (73–79°F). Native range: South America, Argentina, Ecuador, Guyana, Peru and Suriname. Bottlenose catfish care at a glanceTemperature23–26°C (73–79°F) Species factsScientific nameAgeneiosus marmoratusFamilyAuchenipteridae (Driftwood catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length18.5EnvironmentFreshwater; pelagicClimateTropicalDistributionSouth America: Argentina, Ecuador, Guyana, Peru and Suriname.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=1, Fec More catfish & plecosGuitarritaBunocephalus coracoideusSpotted corydorasCorydoras ambiacusSkunk corydorasCorydoras arcuatusPink corydorasCorydoras axelrodiBanded corydorasScleromystax barbatusSpotback corydorasCorydoras blochiSee all catfish & plecos SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026