The Payara is a relative of the Piranha and Pacu.
River Monsters[]
It is one of the fish Jeremy Wade caught in the first episode of Season One: Piranha. It is a popular game fish in South America. It appears later in the season when Wade saw the corpse of some animal drifting away in a river. When they brought it in, a payara had appeared to have killed itself by attempting to swallow another payara headfirst in an extreme act of cannibalism. Although after they took the worn out corpse of the payara inside the other payara, the cannibal showed signs of life. Wade lowered and revived it and it survived, a testament to how much some fish can swallow.
Description[]
The payara averages 1.5 feet long, around the size of a black pirhana. A full grown adult can be some 3 feet long, and weighs at least 8-10 lbs. The payara has long,sharp fangs that can be 4-6 inches long, giving it the nickname the vampire fish.