The super invasive rusty crayfish, sometimes called a gladiator, has been slowly taking over several waterways in Pennsylvania. The crayfish were transported to Pennsylvania from their native range in ...

Researcher George Merovich holds a captured specimen of the nonnative rusty crayfish near the Juniata River in central Pennsylvania. Photo by Stephanie Coster. Crawdad, crawfish, crayfish. No matter ...

An invasive species known to attack the feet of unsuspecting swimmers was just discovered in a Kansas lake, officials said. The Kansas Department of Wildlife and Parks found rusty crayfish in ...

PORTLAND - Rusty crayfish, an invasive species now crawling across the rocky bottoms of lakes and streams throughout the United States and Canada, may not always have a stronghold once they enter ...

Colorado Parks and Wildlife announces the discovery of rusty crayfish in Lake Granby, south of Grand Lake, Colorado. Multiple crayfish were found at Lake Granby during routine Aquatic Nuisance Species ...

ST. CHARLES, MO.? Thanks to a vigilant fisherman, the Missouri Department of Conservation received a heads-up on the unwanted rusty crayfish. The dreaded critter was spotted at a bait company in ...

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 ...