This invader is eating through Colorado’s rivers, and it could wipe out native fish and plants if left unchecked. Colorado wildlife officials are raising the alarm after an aggressive invasive species ...

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 ...

An invasive species of crayfish that is taking over streams from Minnesota to Maine might be successful because it's not a fussy eater, according to biologists with the University of Cincinnati. In ...

Crawdad, crawfish, crayfish. No matter what you call the crustaceans, the rusty crayfish, an interloper from the Ohio River watershed, has become one of the most destructive invasive species in the ...

LARIMER COUNTY, Colo — A non-native crustacean has been discovered in the Little Thompson River for the first time. Colorado Parks and Wildlife (CPW) confirmed the presence of rusty crayfish in the ...