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 ...

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

"I think of [them] as kind of the soul of our rivers." Cold water fish spotted upstream in Northern California for first time in 70 years: 'It's epic' first appeared on The Cool Down.

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

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 ...

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 ...

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 ...

Hannah Parvin, of the Westcountry Rivers Trust, said: "Salmon are functionally extinct from this catchment because of the ...