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

The crayfish were transported to Pennsylvania from their native range in the midwest more than 50 years ago when they were used as fishing bait. “When folks were done fishing with their bait ...

No species should be outside its natural range in the wild," he said ... Great Crayfish Plague' because it wiped out crayfish in Europe [after American species were introduced] back in the ...

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 ...

Giant freshwater crayfish, longer and bulkier than today’s species, roamed New Zealand 20 million years ago. They would have made a perfect snack for the crocodiles and trout-sized whitebait that ...