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.

Eggs from a rare Mexican fish species believed to be extinct in the wild have successfully hatched at Bristol Zoological Society. Experts at the charity took delivery of more than 50 boxer pupfish ...

Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why you shouldn't release them into the wild.

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 unexpected discovery served as a stark reminder that a released pet goldfish will go 'from cute to brute' as it can quickly turn into an invasive species in local waterways, wreaking havoc on ...

“Many of the reasons that make goldfish invasive upon release are the same reasons that they make great pets and pet trade species,” Sara Ricklefs, Executive Director of the Invasive Species ...

There are "huge numbers of rare species", said Horton, adding that much of the diversity was among the creatures living in the mud. The nodules are also a unique habitat, like coral gardens in ...