A cousin to the piranha, pacu fish have a row of teeth that look nearly identical ... but are most likely caused by people releasing them after trying to turn pacu into pets.

Deep below the surface of a river in northern Brazil, a “shy” creature tucked its “armored” body into a rocky crevice. Divers ...

she moved her fingers through the fish's mouth and opened it widely to show people its human-like teeth rooted in gums. She pulled down the fish's lower lip and noted how the creature had a full ...

A Brazilian woman was horrified when she found a fish with human-like teeth in its mouth while cleaning it for dinner. The video of the fish's teeth went viral with over 5.3 million views.

A Brazilian woman was left horrified after discovering human-like teeth in a fish she had purchased from a beach vendor for dinner. Paula, a business owner on holiday with her family, was ...

Scientists believe their teeth—which are not used in feeding—are instead part of the mating process. In the past, people thought the fish were basking in the sun as they cruised near the ...