Origin: Widespread in Ecuador, Peru and Colombia.
Etymology: tri (L.): Three. linea(L.): Line, referring to the three lateral bands on the sides of the fish.
Synonyms: Corydoras episcopi, Eigenmann & Allen, 1942. Corydoras dubius, Nijssen & Isbrücker, 1967. (Note the latin joke in the latter!)
First European import: J. Hauxwell
Description: See pictures. Often sold as C. julii, but this is a completely different species.
Care:One of the hardier Corydoras, it can well be kept in a community tank. Regular waterchanges and some hideouts are recommended. This is an active, nice looking species, which isn't shy.
Size: Up to 5.5 cm
Breeding: The fish have been bred under aquarium conditions. Lambourne describes how 6 males and 4 females bred after the temperature in the tank dropped from 22 to 17 degrees. This resulted in 700 eggs, which hatched in 4 days.
Sexual dimorphism: females are bigger
Picture references: All pictures E. Naus
References:Lambourne, D. ((1995): Corydoras catfish, An Aquarist's Handbook. Blandford, London, UK.
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