Researchers believe the fossils belonged to one of the species of the Osmeriformes family, ancestors to modern graylings and ...

A community of rare fish enthusiasts collects endangered species of freshwater fish from lakes and springs around the world, ...

But for some species, there is still hope. A community of rare fish enthusiasts collect endangered species of freshwater fish from the lakes and springs of East Africa, Mexico and elsewhere ...

The boxer pupfish are believed to be extinct in the wild Eggs from a rare Mexican fish species believed to be extinct in the wild have successfully hatched at Bristol Zoological Society.

Evolving roughly 27 different times in the long history of fish, bioluminescence—the biological production of light—is one of ...

Adorable footage of one of the world’s rarest and most unusual ocean creatures has left thousands of Aussies swooning. In the ...

The startling sight triggered a 40-minute battle to reel in the incredibly rare three-metre-long fish — which Paull admitted was not an easy feat given her 48kg frame. After pulling it onto the ...

A rare one-day smelt dipping season on Thursday drew crowds to Troutdale’s Sandy River, as a spring break surge of eulachon ...