The a-pacu-lypse is upon us. As if US waterways weren’t teeming with enough invasive fish of late, a Texas angler caught a South American piranha relative with “human teeth” at a local lake on Sunday.

Not all creepy things go bump in the night -- some of them swim. While you might think of fish as harmless little dudes hanging out in your aquarium, there are some ...

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 ...

What has needle-like teeth so large they don’t fit inside its mouth, a huge gaping jaw that completely engulfs its prey, and lives in the ocean zone where sunlight can’t reach? That would be the ...

Recent reports suggest that a "frankenfish" was found last month in Bensalem, Pennsylvania — about 10 miles off the New Jersey border and oceans away from the species' natural habitat. Northern ...

The deep-sea creature is an image horror films are made of: Dark black flesh, teeth sharp as glass and an antenna that glows to entice prey in the ocean’s depths. It’s quite fitting that the ...