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Pygocentrus is a genus of the piranha family Serrasalmidae. All species are native to tropical and subtropical South America. All the species are predatory, scavengers and may form large schools. The famous red-bellied piranha, Pygocentrus nattereri, is one of four species in the genus. [1]
Pygocentrus nattereri Kner , 1858 The red-bellied piranha , also known as the red piranha ( Pygocentrus nattereri ), is a type of piranha native to South America , found in the Amazon , Paraguay , Paraná and Essequibo basins, as well as coastal rivers of northeastern Brazil .
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Serrasalmus, Pristobrycon, Pygocentrus, and Pygopristis are most easily recognized by their unique dentition. All piranhas have a single row of sharp teeth in both jaws. The teeth are tightly packed and interlocking (via small cusps) and are used for rapid puncture and shearing. Individual teeth are typically broadly triangular, pointed, and ...
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Liotyphlops ternetzii - Wikipedia ... Liotyphlops
The primarily carnivorous piranha group comprises the genera Catoprion, Pristobrycon, Pygocentrus, Pygopristis and Serrasalmus, but based on phylogeny also the mainly herbivorous (although with omnivorous tendencies) Metynnis. [7]