RIO NEGRO, Brazil (WTHR) - One of the most popular things to do in the Amazon rainforest is fishing for piranha. In Sept. 2015, photographer Steve Rhodes and I spent several days at the Anavilhanas ...

Piranhas are among the most deadly creatures in the water, with razor-sharp teeth capable of slicing flesh easily, but a fish in the Amazon River basin has developed a "bulletproof vest" to protect ...

A freshwater Amazonian fish has evolved scales with microscopic armorlike structures specially designed to resist a piranha's piercing bite, new research shows. Arapaima gigas is the largest — and ...

Piranhas, known for their sharp teeth and powerful jaws, are efficient hunters in South American freshwater ecosystems. They exhibit complex social behaviour, hunting in schools and using advanced ...

There’s more to Brazil than the Olympics: There’s the Amazon River, 4,000 miles long and teeming with 3,000 species of fish, including the deadly piranha. Join NBC’s Keir Simmons as he goes fishing ...

Six years ago, the fish ecologist Rodney Rountree was on a skiff in the Peruvian Amazon. He was holding a piranha in his hand…underwater…in a river filled with ...

It's a matchup worthy of a late-night cable movie: put a school of starving piranha and a 300-pound fish together, and who comes out the winner? The surprising answer -- given the notorious guillotine ...

Researchers in a California biomechanics lab recently staged what should have been the most lopsided freshwater cage match of all time. In one corner was a red ...