Serrasalmidae


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Serrasalmidae

 

(piranhas, or caribes), a family of predacious fishes of the order Cypriniformes. The jaws are powerful, and the teeth are sharp. There are three genera, distributed in the freshwaters of South America. They prey in huge schools, tearing pieces of flesh from their victim’s body. They can completely clean a skeleton of a large animal, such as a capybara, in a moment. The fish are attracted by the smell of blood and by splashes in the water. Of the four large species especially dangerous to humans, the best known are Rooseveltiella nattereri, which reaches 30 cm in length, and Pygocentrus piraya, which reaches 60 cm. Piranhas lose their aggressiveness when kept in an aquarium.

REFERENCE

Zhizn’ zhivotnykh, vol. 4, part 1. Moscow, 1971.
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Microsatellite markers for the tambaqui (Colossoma macropomum, Serrasalmidae, Characiformes), an economically importanty keystone species of the Amazon River floodplain.
This research will test this hypothesis by examining WA morphology and function in Serrasalmidae, an ecologically diverse otophysan family with 15 genera and
mesopotamicus of the subfamily Serrasalmidae is mainly reared in the mid-western and southeastern Brazil (Ostrensky, Borghetti & Soto, 2008) but also in China (Lin, Gao & Zhan, 2013) and in the USA (Witmer & Fuller, 2011).
Entonces se puede hipotetizar que por la riqueza que presenta este, podria representar aproximadamente una media de 4 a 6 especies de parasitos por cada especie de huesped de la familia de Serrasalmidae.
Se observo un predominio marcado de la familia Characidae con 33 especies que representaron el 42% del total, seguida por Serrasalmidae con trece (16%), Anostomidae con el 7.
In the Sorocaba River basin it was not different, 14 families were found, some of them represented by only one species, as observed with Prochilodontidae, Serrasalmidae, and Erythrinidae, among others.
Family Species Pimelodidae Pseudoplatystoma fasciatum Erythrinidae Hoplias aimara (> 1,700 g) Ageneiosidae Ageneiosus brevifilis Doradidae Doras micropeus Serrasalmidae Serrasalmus rhombeus Erythrinidae Hoplias aimara (< 1,700 g) Doradidae Platydoras costatus Characidae Cynodon meionactis (cf.
orthonops with other species of the Parana River basin, the authors calculated the mean of 74 species distributed in 12 families (49 Loricariidae, three Callichthyidae, five Pimelodidae, one Cynodontidae, one Erythrinidae, six Anostomidae, one Prochilodontidae, one Auchenipeteridae, three Gymnotidae, one Serrasalmidae, three Characidae and one Cichlidae).