The Center for Biological Diversity notified the Trump administration today that it intends to sue over the U.S. Fish and ...

Giant freshwater crayfish, longer and bulkier than today's species, roamed New Zealand 20 million years ago. They would have ...

Giant freshwater crayfish, longer and bulkier than today’s species, roamed New Zealand 20 million years ago. They would have ...

At the base of the Grand Teton Mountain range, a new fish species tinged with green was identified as separate from its blue brethren.

A crayfish plague has wiped out the majority of the native population in a Yorkshire river – although they are clinging on in its tributaries.

TYLER, Texas — Texas constantly grapples with invasive species. Armored Catfish and ... The Australian Red Claw crayfish, a monster invasive crayfish, potentially causing monstrous problems ...

Forty-six crayfish collected in the Ocoee River Gorge in southern Tennessee are part of a new species, researchers said in a study. Photo from senior author Roger F. Thoma A researcher was wading ...