red-bellied piranha
Quick Summary
The red-bellied piranha (Pygocentrus nattereri) is a species of carnivorous fish found in South American rivers and lakes. While often depicted as ferocious killers, most piranha species are scavengers or eat plant material. Red-bellied piranhas, which can grow up to 50 cm (about 20 inches) long, have sharp, triangular teeth and hunt in groups, especially during low water. They are known for their strong jaws and scissor-like bite. Piranha attacks on humans are rare, and most species do not prey on large animals. Unlike their close relatives, pacu fish, whose teeth are flat for grinding, piranhas possess teeth designed for tearing flesh.12
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