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.

Rusty crayfish, an aquatic nuisance and an invasive species, has been discovered in a Larimer County river south of Estes Park, according to Colorado Parks and Wildlife. An invasive species of ...

What’s rusty and invasive to our waters? The rusty crayfish! Join the Forest Preserve District of Kane County for the seventh annual Rusty Rodeo on Saturday, Aug. 9, from 10 a.m. to noon. It’s time to ...

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 die off naturally, ...

URBANA, Ill. - Since they were first released as live bait in the mid-twentieth century, rusty crayfish have roamed lake bottoms in northern Wisconsin, gobbling native fish eggs, destroying aquatic ...

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 ...

The rusty crayfish has been found in Maryland since 2007, Virginia since 2011, Pennsylvania since 1976, West Virginia since 1977 and New York since 1978. Both the Susquehanna and Potomac rivers have ...

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 ...

The Wyoming Game and Fish Department is asking the public to be on the lookout for the rusty crayfish, an aquatic invasive species that’s turned up in the Laramie River watershed. Anyone who finds one ...

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 ...