Piranhas, notorious for sharp teeth and powerful bites, are specialized freshwater predators. Their anatomy and feeding behavior have evolved, making them efficient hunters capable of tearing through ...

Some 150 million years ago, prehistoric fish swimming in the sponge and coral reefs of what is now southern Germany might not have suspected there was a piranha-like predator prowling among them. But ...

Piranha teeth have the tough task of crunching bone and shredding flesh and, like well-used kitchen knives, they dull over time. Since they have no way to sharpen their teeth, piranhas lose and regrow ...

A CT-scanned image of the piranha Serrasalmus medinai. Note the ingested fish fins in its stomach. Credit: University of Washington Piranha fish have a powerful bite. Their teeth help them shred ...

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 ...

A few weeks ago, Eric Estrada, an artist and ardent fly fisherman who lives in North Miami Beach, decided to visit a neighborhood pond. He hoped to hook his usual catches of peacock bass, snook or ...

A young boy fishing in Oklahoma reeled in a surprise catch this weekend when he found a close relative of the piranha at the end of his line. The boy, an 11-year-old named Charlie Clinton, caught the ...

I'd had tropical fish jump out of my aquariums before, but this one required special attention. It landed on the carpeted floor below the aquarium and immediately flopped under the bottom of the stand ...