Have you ever started to peel a crawfish and noticed green fat inside of the head instead of yellow? Many people may toss such a crawfish out, assuming it could be bad to eat. But that's likely not ...

Add Yahoo as a preferred source to see more of our stories on Google. The Okanagan crayfish (Pacifastacus okanaganensis) from the British Columbia Interior and Washington state has a new description.

The coldwater crayfish is found primarily in the Eleven Point River in southern Missouri. JEFFERSON CITY — The small crustaceans that scuttle among the rocks of Missouri streams and rivers are a key ...

For decades, the signal crayfish has been an ecological troublemaker. It is invasive and widespread across Europe, Asia, and parts of the United States. Recently, researchers at the University of ...

A new critter is creeping into the United States' waters. The invasive Australian redclaw crayfish has been spotted in southern Texas, roughly 8,000 miles from its home. The freshwater crustacean is ...