WASHINGTON (Reuters) - One of the world's largest freshwater fish is protected by the natural equivalent of a "bullet-proof vest," helping it thrive in the dangerous waters of the Amazon River basin ...

Piranhas, notorious for sharp teeth and powerful bites, are specialized freshwater predators. Their anatomy and feeding ...

Piranhas belong to a family of bony fish characterized by highly developed dentition. They’re cousins to the pacu fish, which has dentition eerily similar to human teeth. Unlike pacu teeth, which are ...

Piranhas had become accustomed to the free food discarded in the river. Once first blood was drawn, the school attacked en masse. When you purchase through links on our site, we may earn an affiliate ...

Things just got wild in Chandler's backyard! Zak Catchem surprised him with a few Mega Piranhas, and now they’re settling into their new home, a custom pond built just for them. Watch Chandler dive in ...