HomeFreshwater aquarium fishCatfish & plecosLongsnout corydoras Longsnout corydoras (Corydoras treitlii) Scientific name: Corydoras treitlii Steindachner, 1906 The Longsnout corydoras (Corydoras treitlii) is a freshwater fish of the family Callichthyidae. In the aquarium it needs water at 20–25°C (68–77°F). Native range: South America, Coastal drainages in northeastern Brazil. Longsnout corydoras care at a glanceTemperature20–25°C (68–77°F) Species factsScientific nameCorydoras treitliiFamilyCallichthyidae (Callichthyid armored catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length5.9EnvironmentFreshwater;; pH range: 6.0 - 8.0; dH range: 2 - 25 demersalClimateTropicalDistributionSouth America: Coastal drainages in northeastern Brazil.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More catfish & plecosThreestripe corydorasCorydoras trilineatusRust corydorasCorydoras rabautiPygmy corydorasCorydoras pygmaeusPretty corydorasCorydoras pulcherXingu corydorasCorydoras xinguensisPorthole catfishDianema longibarbisSee 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