A research project is aiming to find out why the population of a rare UK fish is declining. The Freshwater Biological ...

The Hydrolagus trolli, the pointy-nosed blue chimaera, or “ghost shark,” is unlike any other on earth. Sightings are rare, ...

Could pollution be the cause of the declining numbers of the rare Arctic charr in their Lake District spawning grounds?

The world's only population of wild Devils Hole pupfish shrank to 38 members after two earthquakes greatly affected the ...

The rare, prehistoric-looking fish are found mostly in South Florida in U.S. waters. They were thought to be nearing ...

Earthquakes in December and February created waves in a Death Valley National Park pond that devastated the habitat of one of the world's rarest fish, but recovery efforts are now showing promise ...

The green lineage cutthroat trout, a subspecies of Colorado River cutthroat trout, is native to the Bobtail, McQueary and ...

The type of species you can hook on your rod and reel will depend on the time of year, and where you're fishing in the state.

The seemingly sequestered, deep-blue swimming hole that the world’s rarest fish calls home isn’t immune to shifts in the tectonic plates. Luckily, scientists have been planning for years.