Piranha, also called caribe or piraya, any of more than 60 species of razor-toothed carnivorous fish of South American rivers and lakes, with a somewhat exaggerated reputation for ferocity.
In movies such as Piranha (1978), the piranha has been depicted as a ravenous indiscriminate killer. Most species of piranha never grow larger than 60 cm (2 feet) long. Colours vary from silvery with orange undersides to almost completely black.
These common fishes have deep bodies, saw-edged bellies, and large, generally blunt heads with strong jaws bearing sharp, triangular teeth that meet in a scissorlike bite.
These sharp-toothed water dwellers are more than capable of stripping a carcass clean in mere moments.