Corynopoma riisei, Gill, 1858
Origin: Venezuela, Trinidad and Colombia, in the Rio Meta and in lakes.
Synonyms: Corynopoma albipinne, Corynopoma aliata, Corynopoma searlesi, Corynopoma veedoni, Nematopoma searlesi, Stevardia albipinnis, Stevradia aliata, Stevardia riisei.
First European import: Germany, 1932, by Otto Winkelmann
Description: See pictures. The males will develop elongated finnage when full grown.
Care: A very interesting fish, undemanding,which likes company. Densely planted tank, not too small, with lots of light( a bit of sunlight is recommended). The fish can be kept in pairs or in small schools of 6 or more. Waterconditions of minor importance, but the fish do require some free swimming space and a covered corner with floating plants.
Temperature: 22-28 degrees.
Feeding: Live, flake and frozen food.
Size: Males up to 7, females 5.5 cm.
Breeding: A 40 or 60 cm breeding tank will suffice. Raise the temperature to 24-28 degrees. The fish will become very active prior to mating. A single mating is sufficient to produce several spawns. The male will start displaying in front of the female, and if she is willing, he will start to circle around her. During this "dance' the male will protrude it's gillcovers until they are at a 90 degree angle with the female, and are vibrated in front of the female. After this the male will place a sperm packet in the female. After a while the female will place up to 60 eggs at a time in lines on plantleaves. The eggs will hatch after 24-36 hours, are free swimming two days later and should be fed large amounts of infursoria.
Sexual dimorphism: Males have elongated fins and elongated gillcovers.
Additional: Newly bought fish are very susceptible to Ick. Place the fish in a quarantine tank for two weeks prior to adding them to the community tank.
Picture references: All pictures E. Naus
References:Axelrod, H. R. (1974): Encyclopedia of Tropical Fishes. T. F. H. Publications, Neptune city, U. S. A.Baensch, H. A., Riehl, R.(1982): Aquarien Atlas I. Mergus Verlag, Melle, Germany.
Frey, H.(Unk): Het grote aquariumboek. Edition III, revised by A. van den Nieuwenhuizen. Neumann Verlag, Radebeul, Germany.
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