A Piranha Plant is an enemy that appears in almost every Mario game starting with Super Mario Bros.. They hide in pipes and come out every now and then to try and eat Mario. There are many different types of Piranha Plants that serve as enemies. In Super Mario Bros. 3 in the Pipe Maze land every type of Piranha Plant is in every level and appear in the pipes or around. Piranha Plants are famous enemies and appear on every main Mario title. The most famous of which is Petey Piranha.