Add Yahoo as a preferred source to see more of our stories on Google. The super invasive rusty crayfish, sometimes called a gladiator, has been slowly taking over several waterways in Pennsylvania.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Populations of rusty crayfish, an invasive species in the lakes of ...

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 ...

Officials in Colorado are sounding the alarm over the presence of an aggressive invasive species that poses a serious threat to local wildlife. According to a press release from Colorado Parks and ...

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 ...

Researchers trap rusty crayfish to test ways to remove the invasive species. Researchers trap rusty crayfish at Tofte Lake to develop methods for removing the invasive species from northern waters ...

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 ...

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 ...