Diamondfish
Diamondfish | ||||||||||||
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Diamondfish ( Enneacanthus obesus ) |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Enneacanthus obesus | ||||||||||||
Girard , 1854 |
The diamond perch ( Enneacanthus obesus ), also called black-banded sunfish , belongs to the sunfish (Centrarchidae).
distribution
Its distribution area is in the east of the USA , from the northern border of Massachusetts ' to the south of Florida . It prefers heavily overgrown, standing or calm flowing water. In Central Europe they were introduced by humans in some places. The populations could not hold their own.
Physique and coloring
The animals, which can grow up to 10 centimeters long, have a high-backed, laterally compressed, typical perch shape. They are light or olive brown with 5 to 8 dark, vertical bands on the flanks. These are also covered by numerous brass-colored, green or blue small dots. During the spawning season, the males are more brightly colored.
Reproduction
The diamond bass spawns in a small hollow near aquatic plants. When spawning, the female wags her tail so that the fertilized eggs are washed into the plants. Up to 500 eggs are laid. The male then takes over the guarding of the brood. It protects the eggs from predators and repeatedly fills them with fresh oxygen so that the eggs can develop better. The young hatch after two to three days. If the yolk sac of the larvae is used up, the brood care instinct of the animals disappears.
Aquaristics
The diamond perch is kept in the aquarium hobby in a so-called cold water aquarium. The water temperature should be between 10 and 22 degrees Celsius. The pH at which these fish feel comfortable is 7.0 to 7.5. The fish are very sensitive to fluctuations in the pH value. Therefore, the carer must be careful when moving or changing the water. The aquarium should be planted and contain stones and roots in addition to a soft substrate. The animals use this to demarcate areas in the basin and to hide. However, the diamond perch is considered to be demanding in terms of feeding. He usually does not accept dry food ; he must be provided with live food .
literature
- Günther Sterba : Freshwater fish of the world , Urania Verlag 1990 (Weltbild Verlag); ISBN 3-89350-991-7
- Rüdiger Riehl , Hans A. Baensch : Aquarien Atlas , Mergus Verlag 1985; ISBN 3-88244-010-4
Web links
- Enneacanthus obesus on Fishbase.org (English)
- Enneacanthus obesus inthe IUCN 2013 Red List of Threatened Species . Posted by: NatureServe, 2011. Retrieved February 10, 2014.