The Fish and Boat Commission is monitoring invasive rusty crayfish that act like gladiators as they try to take over native ...

The crayfish can grow up to 2 pounds in less than a year. Their size and rapid reproduction rate allow them to outcompete native species, possibly overtaking food sources and disrupting local ...

A spill of diesel into a river could affect endangered native crayfish, a wildlife trust has warned. Residents of Kendal, Cumbria, first spotted the oily substance floating atop the River Kent ...

New Yorkers looking to find an elusive blue crayfish will have to travel, albeit not far. Cambarus monongalensis are native to West Virginia, Ohio, and New York's neighbor, Pennsylvania. The only ...

But it is a long way from home. The lower Rio Grande Valley is home to several native species of crayfish — more commonly called crawfish or crawdads in the local vernacular. Australian redclaw ...

These crayfish are larger, more aggressive, and reproduce more quickly than native species, leading them to dominate ecosystems and disrupt food webs. Rusty crayfish have a significant impact on ...