Megapiranha...

It may sound like a Sy-Fy movie (and in fact was),...  ...nd like a Sy-Fy movie (and in fact was), but this fish is real -or was, 10 million years ago. Megapiranh...  ...s rhombeus or black piranha. One 2 ½ pound fish delivered a bite with a force of 320 newtons, or...  ...body weight.The chart here compa...

http://www.neatorama.com/2012/12/27/Megapiranha/