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.

Scientists have described a new species of colorful crayfish—and it might already be sitting in your aquarium. The researchers detailed their discovery in the journal Zootaxa last week. Though ...

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 ...