with a study in 2012 indicating that the black piranha has the strongest bite found in a living fish. They will eat almost anything when hungry - and there have been fatal attacks on humans ...

A new species of piranha-like fish has been discovered in the Amazon ... Most pacus, for example, have flattened, human-like teeth that help them break down plant matter rather than to rip through ...

Piranhas are fish that live in the Amazon River ... so the chance of a piranha ever attacking a human is very slim. They often only choose to attack bigger prey when the prey is already dying ...