Megapiranha...
It may sound like a Sy-Fy movie (and in fact was),... ...bout ten times the size of the tiny but dangerous piranhas we know, and had a relative bite force that would... ...ents of the biting force of Earth’s largest piranha today, Serrasalmus rhombeus or black piranha ....
http://www.neatorama.com/2012/12/27/Megapiranha/
