Megapiranha

Megapiranha is an extinct serrasalmid fish described in 2009. The name is a combination of the word "mega" and piranha. This freshwater fish is called megapiranha, giant serrasalmid, or cutting fish by people in other countries.
Description.
"Megapiranha" was a giant piranha having the teeth of a modern serrasalmid. Megapiranhas can bite you if you see them in real life. "Megapiranha" has one species called Megapiranha paranensis.