A new species of fish has been discovered in the Amazon: a piranha relative with humanlike teeth. The eye-catcher was named after a “Lord of the Rings” villain.

A closeup of the pacu found in a neighborhood pond in Oklahoma. The fish, known for its humanlike grin, is native to South America, not the United States. Oklahoma Department of Wildlife Conservation ...

A pacu is a freshwater fish typically found in the Amazon River and a relative of the piranha. While the fish is sold at U.S. pet shops, they're illegal in California.

A boy in Oklahoma reeled in an alarmingly weird catch this past weekend: a pacu, the South American fish that's a cousin of the piranha — and whose humanlike teeth have long struck fear in swimmers.

This pacu was found near Yuma, Arizona, in June 2006. Another one was found in New Jersey in June 2015 but the fish are native to South America. Photograph by Yuma Sun, Jacob Lopez/AP WEIRD & WILD ...

Mitchell said that, in 26 years, he has seen about 10 to 12 pacu fish in Arizona waters. Game and Fish in Tucson stocks lakes with rainbow trout in cold-weather months and catfish and sunfish in ...

The fish was later identified as a pacu, native to South America and a relative of the piranha, according to the Arizona Game and Fish Department in Tucson. Game and Fish doesn't stock waterways ...

The pacu fish is a rare fish that is usually found in the Amazon River in South America. One of these pacu fish was recently caught in a lake in New Jersey, which only makes me wonder if it's time ...

ASBURY PARK, N.J. — A father and son set the Internet ablaze when they caught a native Amazonian fish in a New Jersey lake that has an unusual urban legend: It eats testicles. "It's the craziest ...

Murray Stanford (left) and Kelly Gestring say goodbye to Igor, the deformed Pacu fish. Igor was their adopted pet for more 35 years at the former Florida Fish and Wildlife Conservation Commission ...

Swedish skinny dippers, you may want to pull on your swim trunks. A sharp-toothed pacu fish has been caught in the Danish-Swedish strait of Oresund, putting swimmers on edge because of its ...