Piranha water

A Piranha fish who appears in Bubblegloop Swamp from Banjo-Kazooie and Bad Magic Bayou from Banjo-Kazooie: Grunty's Revenge. It will bite you if you go into the swamp. The only way to prevent this is to get some Wading Boots on, use the Wonderwing, or to transform Banjo into the Crocodile.

Trivia

 * The Crocodile Banjo can pass by the piranhas because crocodiles are predtors of piranhas in real life.
 * The Piranha fish are very similar to the Bitesize's from Donkey Kong Country