Megalamphodus megalopterus, Eigenmann, 1915
Origin: Brasil, upper Rio San Francisco(B&R). The fish has also been reported from the Rio Guapore(Mills&Vevers). To add to the confusion, Sterba reports the amazon basin, besides Rio Guapore.
First European import: Unk.
Description: See picture.
Care: In a medium sized tank several couples can be kept. Megalamphodes megalopterus requires soft and at least slightly acidic water, and at least a part of the tank that is covered with floating plants. A dark soil and some planted regions in the tank alternated with driftwood pieces, although some free swimming space should be available. If several males are kept together the fish will display continuously towards eachother, swimming around eachother and spreading their fins. Tank should have decent filtration, as well as receive frequent waterchanges.
Temperature: 22-28 degrees.
Feeding: Omnivorous, all food is accepted.
Size: Up to 4.5 cm.
Breeding: Tank setup similar to the care section, but softer and more acidic water, pH around 5.5, and less light. It's best to use a single pair in a 40 cm tank, and to raise the temperature to 26 degrees. Feed the fish well. After spawning occurred it's best to remove the parents. Egg cycle 12-18 days. Frys hould be fed infusoria for the first few days, after that artemia nauplii can be given.
Sexual dimorphism:Males less colorfull than the females. Females have red ventral and pectoral fins.
Prices: Netherlands: Unk.
Additional: If not kept in the right circumstances, Megalamphodus megalopterus is very susceptible to fish tuberculosis.
Older fish do not seem to breed anymore.
Picture references: All pictures: E. Naus
References:Baensch, H. A., Riehl, R.(1982): Aquarien Atlas I. Mergus Verlag, Melle, Germany.Mills and Vevers.Sterba, G.(1979): Aquariumvissen. Elsevier Nederland B. V., Amsterdam, The Netherlands.Pinter, H.(1966): Handbuch der Aquarienfischzucht. Alfred Kernen Verlag, Stuttgart, Germany.
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