Several days ago a strange fish was captured in Illinois, which was later identified as a — wait for it — testicle eating pacu. The fish can weigh up to 55 pounds and has been known to bite the testicles of fisherman. Yikes! While the fish above is not a pacu, it is a piranha, which is from the same family. They’re both noted for having human-like teeth that can cut like a pair of scissors.