Pygopristis denticulata is a species of piranha and is the only species of the genus Pygopristis. It is a rare South American fish found in the Orinoco River basin, north and eastern Guiana Shield rivers, and tributaries of the lower Amazon River.
Pygopristis has pentacuspid teeth and a middle cusp that is usually only slightly larger than the other cusps. This is unlike other piranha, which have tricuspid teeth with a larger middle cusp making the teeth appear triangular.
This fish possesses powerful dentition that can cause serious bites.