A fish previously declared extinct has been released back into the wild in Australia. The olive perchlet, a small oval-shaped fish with large eyes, was considered extinct in Victoria, Australia, in ...

Another rare and prehistoric fish washed ashore on Fripp Island in Beaufort County this week. Here’s what we know.

A new study, published on May 21 in the journal Nature, has revealed surprising information about the origins of human teeth. Our teeth evolved from the piercing “body armor” of extinct fish, which ...

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

A tiny fish long feared lost has resurfaced in Bolivia, offering a rare conservation success story amid widespread habitat destruction. Moema claudiae, a seasonal killifish unseen for more than 20 ...

Researchers have rediscovered a rare fish species presumed to be extinct after it was not seen for more than eight decades.

There are plenty of contemporary creatures that inspire fear. For example, the northern green anaconda is the heaviest snake in the world and weighs more than a football player. Should you encounter ...

The ivory-billed woodpecker, along with 22 other species of birds, fish, mussels and other wildlife, is set to be declared extinct and removed from the endangered species list, US wildlife officials ...

Hundreds of tiny endangered fish slipped from orange plastic buckets into a glittering lagoon in Malibu on Tuesday, returning home five months after being whisked away from threats wrought by the ...

Our modern teeth evolved from a most unexpected source. A new study, published on May 21 in the journal Nature, has revealed surprising information about the origins of human teeth. Our teeth evolved ...