Jeremy Wade hosts a show called "River Monsters," so I suppose this would fall under the show's umbrella. After hearing word of a fish that killed two men by eating their testicles, causing them to bleed to death, Wade decided to seek out the culprit.
Wade reportedly spent weeks hunting the fish, known as the Pacu fish, "which is renowned for its powerful jaws."
After hooking the 40lb predator with a fishing line and dragging it onto his small fishing boat, Mr Wade was shocked by what he found.
'When I reeled it in, it had this mouth which was surprisingly human-like, it is almost like they have teeth specially made for crushing.
'They are like human molars and the fish have powerful jaw muscles. They are very deep bodied and solid like a carp, with strong muscles.'
Pacu fish are an herbivorous cousin to the piranha, with a primary diet of nuts and seeds.
h/t Aaron K.
Testicle-eating fish that killed two men caught by British angler [Metro UK]