HomeFreshwater aquarium fishCatfish & plecosCorydoras armatus Corydoras armatus Scientific name: Corydoras armatus G?nther, 1868 Corydoras armatus is a freshwater fish of the family Callichthyidae that grows to about 5 cm (2 in). It is peaceful, suits community aquariums and needs a tank of at least 75 L (20 US gal), water at 22–26°C (72–79°F) and a pH of 6.0–8.0. Native range: South America, Upper Amazon River basin. Corydoras armatus care at a glanceTemperamentPeacefulCommunity tankExcellentAdult size5 cm (2 in)Minimum tank75 L (20 US gal)Temperature22–26°C (72–79°F)pH6.0–8.0DietOmnivore. Accepts flakes. Species factsScientific nameCorydoras armatusFamilyCallichthyidae (Callichthyid armored catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentFreshwater;; pH range: 6.0 - 8.0; dH range: 2 - 25 demersalClimateTropicalDistributionSouth America: Upper Amazon River basin.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More catfish & plecosAdolf's catfishCorydoras adolfoiSalt and Pepper catfishCorydoras habrosusFalse spotted catfishCorydoras leucomelasGreen gold catfishCorydoras melanotaeniaSchwartz's catfishCorydoras schwartziFalse network catfishCorydoras sodalisSee all catfish & plecos SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026