Corydoras polystictus, Regan, 1912
Origin: Brazil, Mato Grosso, Doscalvides, Rio Paraguay at Caceres and Rio Guapore tributaries.
Etymology: Poly(G.): Many. Stictos(G.): spotted. Refferring to the numerous spots on the body.
Synonyms: Corydoras virescens, Miranda-Ribeiro, 1912.
First European import: C. Ternetz, 1955?
Description: See pictures, similar to C. puntatus and C. Concolor. C. punctatus has more and more distinct spots, C. concolor has less spots. The fish in the pictures are Corydoras polystictus var. II.
Care: Hardy fish that do well in a community tank, as long as they are kept in groups of 5 or more. Undemanding species, that can be kept in a wide range of watervalues. Provide some hideouts in the form of caves, with driftwood or flagstones. Sandy soil, or round gravel, preferably some floating plants, and a waterlevel of 40 cm or less are recommended.
Temperature: 22-28 degrees.
Feeding: Omnivorous, live, flake, and frozen food is accepted..
Size: Between 4 and 5cm.
Breeding: Keep a groups of males and a few females in a large 100 cm tank with lowered waterlevel. Clear, well-filtered water is necessary.
Sexual dimorphism: Females a bit larger, and bigger.
Prices: Around 5€
Additional: The fish in the pictures are Corydoras polystictus, Variante II
Picture references: All pictures: E. Naus
References:Lambourne, D. ((1995): Corydoras catfish, An Aquarist's Handbook. Blandford, London, UK.Baensch, H. A., Riehl, R.(1985): Aquarien Atlas II. Mergus Verlag, Melle, Germany.Baensch, H. A., Riehl, R.(1989): Aquarien Atlas III. Mergus Verlag, Melle, Germany.
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