Corydoras schwartzi, Rössel, 1963
Origin:Brazil; Amazonas, mouth of rio Purus, middle course of Rio Negro, and Rio Aiuana.
Etymology: Named in honour of Adolfo Schwarz.
Synonyms: Corydoras schwartzi schwartzi(other subspecies at the time Corydoras schwartzi surinamensis).
First import:1962, by Adolfo Schwartz.
Description:Similar to Corydoras ornatus, but the dark pigment continues up into the dorsal fin. Furthermore only 3-5 irregular bars in the caudal fin are present in Corydoras schwartzi. The black pigment on the head forms a clear mask over the eye, which is different from Corydoras ornatus. Corydoras schwarzi and Corydoras surinamensis are very similar, they used to be subspecies(see synonyms). The spots on the side of Corydoras Schwartzi however, form clear lines, whereas in Corydoras surinamensis the spots are irregular, and do not form lines.
Care: A minimum of three fish should be kept in a 60 cm tank with adequate filtration. As Corydoras are school fish it's even better to keep more fish together, for example 6, which will also give a better insight in the animals behaviour in a group. Always leave some space between the cover of the tank and the water, since the fish can go up for air really fast, and in the process of doing so, sometimes even jump out of the water a little.
Feeding:Omnivorous, all food is taken. Occasionally at least the fish should be fed live food, like Daphnia or chopped earthworms.
Size:Up to 6 cm.
Breeding: Probably similar to other Corydoras. Corydoras schwarzi has not (often) been bred in aquaria, which could indicate that breeding this fish is not easy. The origin may indicate that using soft acidic water could be necessary. See also the general Corydoras page(Under construction)
Sexual dimorphism: The females appear bigger and heavier, males have thicker pectoral fin rays.
Picture references:Picture 1, 2, 3: E. Naus. Picture 4 submitted by Boris Kohnen.
References: Lambourne, D. ((1995): Corydoras catfish, An Aquarist's Handbook. Blandford, London, UK.Aqualog, all corydoras.
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