Missouri’s drinking water has an unlikely guardian: a tiny endangered fish found only in Perryville’s cave system.

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 ...

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 ...

Hidden in Bolivia’s seasonal wetlands, a small fish that scientists had written off as extinct for more than two decades has ...

San Francisco-based nonprofit Save the Redwoods League spoke out against the federal government’s four proposed changes that ...

A long-lost Bolivian killifish has been found alive, revealing a globally important hotspot for seasonal killifish diversity at risk from deforestation. Researchers have confirmed the rediscovery of ...

Missouri conservation groups have acquired land to provide new protections for the Grotto Sculpin, an endangered fish found ...

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 ...