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

The endangered Guyandotte River crayfish has lost more than 90% of its range and is now found in only two streams in Wyoming County, West Virginia. The threatened Big Sandy crayfish’s range has been ...

He's traveling from community to community along the river Nile, teaching Egyptian fishermen and farmers about the American crayfish. That's because Egypt's best-known river is suffering from a ...

A stream which is home to one of West Yorkshire's last remaining populations of endangered white-clawed crayfish has been awarded protected status. Luddenden Brook, at Jerusalem Farm nature ...

which has displaced the Big Creek and St. Francis River crayfish across much of its range. More than half of these crayfishes’ streams are expected to be invaded by the woodland crayfish in the next ...