Piranha

A piranha or piraña was a type of omnivorous fish which lived in freshwater rivers in the South American continent of Earth.

Captain Jean-Luc Picard once compared two quantum torpedoes launched from the USS Enterprise (NCC-1701-E) at two Cardassian warships as "hungry piranha's". 

In the 2370s, the Federation Starfleet has a USS Piranha in active service.