Barredtail corydoras
The barredtail corydoras or Cochu's catfish ("Corydoras cochui") is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Upper Araguaia River basin in Brazil. In the system of "C-Numbers" developed by the German fishkeeping magazine DATZ to identify undescribed species of "Corydoras" in the aquarium hobby, this fish had been assigned number "C22" until it was correctly identified. The fish will grow in length up to 1 inches (2.5 centimeters). It lives in a tropical climate in water  with a 6.0 - 8.0 pH, a water hardness of 2 - 25 dGH, and a temperature of . It feeds on worms, benthic crustaceans, insects, and plant matter. It lays eggs in dense vegetation and adults do not guard the eggs. The barredtail corydoras is of commercial importance in the aquarium trade industry. The fish is named in honor of tropical fish importer Ferdinand (Fred) Cochu of the Paramount Aquarium, who collected the type species.