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 ...

Populations of rusty crayfish, an invasive species in the lakes of Minnesota and Wisconsin, have seen a steady decline in some regions—and, for once, humans aren't responsible. A study published in ...

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 ...

Colorado Parks and Wildlife announced the discovery of rusty crayfish in Lake Granby. In a routine Aquatic Nuisance Species sampling done by Parks and Wildlife, multiple crayfish were found in Lake ...

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 ...

URBANA, Ill. – Just how hard should natural resource managers fight invasive species after they establish? A new University of Illinois study suggests some invaders – even highly successful ones – can ...

For kids — and adults — who like to hunt for freshwater crustaceans and don’t mind getting a little muddy in the process, the Forest Preserve District of Kane County has a suitable event. The public ...

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 ...