Corydoras spp. · Easy care · 20 gallon minimum

Charming bottom-dwelling catfish that work the substrate in groups. Need smooth sand and friends.
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A corydoras catfish (Corydoras spp.) reaches about 2.5 inches as an adult. Plan tank size and tank mates around the adult size, not the small fish you buy at the store.
Give a corydoras catfish a minimum of 20 gallons, with water at 72–78°F and a pH of 6.5–7.8. Keep them in groups of at least 6 — they are shoaling fish and become stressed and washed-out alone. As a easy-care, omnivore species, a stable, cycled tank with the right diet keeps them healthiest.
Pair a corydoras catfish with peaceful species that share its temperature and pH range. Compatible options include:
Corydoras is a genus of freshwater ray-finned fish belonging to the family Callichthyidae, commonly referred to as the armoured catfishes, and the subfamily Corydoradinae, the corys. The species usually have more restricted areas of endemism than other callichthyids, but the area of distribution of the entire genus almost equals the area of distribution of the family, except for Panama where Corydoras is not present. Corydoras species are distributed in South America where they can be found from the east of the Andes to the Atlantic coast, from Trinidad to the Río de la Plata drainage in northern Argentina.
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