Piranha

A piranha or piraña (/pɪˈrɑːnjə/, /pɪˈrænjə/, or /pɪˈrɑːnə/; Portuguese: [piˈɾɐ̃ɲɐ], Spanish:  [piˈɾaɲa]), a member of family Serrasalmidae,[1] or a member of the subfamily Serrasalminae within the tetra family, Characidae[2] in order Characiformes, is a freshwater fish that inhabits South American rivers, floodplains, lakes and reservoirs.

Biome/Spawn
The red piranha (Pygocentrus nattereri) spawn on River biome and are quite Common; 20% (2-4 mobs).

Behavior
Piranhas are agressive carnivores and will bite the player if he cross a river with these meat biters. It also attacks Cods and Tropical Fish packs.

Features
Piranhas, like all true fishes, will die of sufocation outside water bodies.