HomeFreshwater aquarium fishCatfish & plecosBlue corydoras Blue corydoras (Corydoras nattereri) Scientific name: Corydoras nattereri Steindachner, 1876 The Blue corydoras (Corydoras nattereri) is a freshwater fish of the family Callichthyidae that grows to about 6.5 cm (2.6 in). It is easy to keep and peaceful, suits community aquariums and needs a tank of at least 75 L (20 US gal), water at 20–23°C (68–73°F) and a pH of 6.0–8.0. Native range: South America, Coastal rivers in southeastern Brazil from Esp?rito Santo to Paran?. Blue corydoras care at a glanceCare levelEasyTemperamentPeacefulCommunity tankGoodAdult size6.5 cm (2.6 in)Minimum tank75 L (20 US gal)Temperature20–23°C (68–73°F)pH6.0–8.0Hardness2–25 dGH (36–446 ppm)DietOmnivore. Accepts flakes. Species factsScientific nameCorydoras nattereriFamilyCallichthyidae (Callichthyid armored catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length5.4EnvironmentFreshwater;; pH range: 6.0 - 8.0; dH range: 2 - 25 demersalClimateTropicalDistributionSouth America: Coastal rivers in southeastern Brazil from Esp?rito Santo to Paran?.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 & plecosMasked corydorasCorydoras metaePanda corydorasCorydoras pandaPastaza corydorasCorydoras pastazensisSixray corydorasAspidoras pauciradiatusPretty corydorasCorydoras pulcherDwarf corydorasCorydoras hastatusSee 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