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Redeye Piranha (Serrasalmus rhombeus) - Wiki latin dict size=73   common dict size=512
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Subject Redeye Piranha (Serrasalmus rhombeus) - Wiki

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Redeye Piranha (Serrasalmus rhombeus) - Wiki

Redeye piranha
From Wikipedia, the free encyclopedia

[Photo] Deutsch: Piranha. Das Copyright des Bildes liegt bei mir. Das Bild habe ich selbst 2001 gemacht und das Original befindet sich in meinem Besitz. Date 2001. Author: Torox http://de.wikipedia.org/wiki/Benutzer:Torox

The redeye piranha or black piranha, Serrasalmus rhombeus, is a fish of the piranha family Characidae found in South America in the Amazon and Orinoco river basins, the north and eastern Guiana Shield rivers, and northeastern Brazilian coastal rivers. Its length is up to 41.5 cm.

The redeye piranha occurs in the rapids but is also captured in deep zones of main rivers with the use of fish bait. It is essentially a carnivore, feeding on small fish, crabs, mammals, lizards and coleopteran insects. Its opportunistic behavior allows it to adapt to various biotopes. While generally timid and non-aggressive, the redeye piranha possesses powerful dentition that can cause serious bites and is therefore potentially dangerous. Import is prohibited in some areas.

Piranhas live in very diverse habitats ranging from soft blackwater, to hard whitewater areas in the Amazon, and as such, are very tolerant of differing water chemistry.

There are several variations of this species depending on the collection spot. Peruvian S. rhombeus are called jet black highbacks. S. Rhombeus from Brazil are mostly lightly coloured and some have diamond shape scales. Venezuelan S. Rhombeus have the brightest red eyes and grey coloration.

In the aquarium
It is generally recommended to keep no more than one in captivity, as redeye piranhas generally do not tolerate ANY tankmates, particularly when they are adults. In the wild it is believed that they generally form loose shoals (or schools, but seem to join and leave different shoals at will). Their primary source of food at a juvenile size is the fins and scales of other fish. In captivity it is possible for them to reach a size of up to 12". It is rare to see them at this size, however, as their growth rate is generally very slow. Specimens that are in the upper size ranges can command very steep prices (such as $500 for a 12" fish). In the aquarium they should be fed a varied diet. Many people feed beefheart, and recipes for mixtures abound on the internet. Feeding live food is controversial.

They do, like all piranha, have razor sharp teeth and powerful jaws and caution should be used when performing tank maintenance, particularly when they are of a mature age. They are much bolder and aggressive at an older age. Juveniles are on average fairly timid. Individual animal temperament does of course vary.

As with any aggressive species, a close attention to water parameters (i.e. ammonia, nitrates) is important, as they are very messy eaters.

All Serrasalmus species are solitary piranhas and S. rhombeus is no exception. They must be kept alone.

Serrasalmus Niger
Serrasalmus rhombeus has been incorrectly referred to as Serrasalmus niger by aquarium hobbyists, under the mistaken belief that "white piranhas" and "black piranhas" are distinct species. Taxonomically the two are synonymous, and Serrasalmus niger is not a recognized species. White piranhas and black piranhas may refer to different color variations as used in the aquarium hobby, however.

http://en.wikipedia.org/wiki/Redeye_piranha
The text in this page is based on the copyrighted Wikipedia article shown in above URL. It is used under the GNU Free Documentation License. You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.

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