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.

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 ...

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 Colorado Division of Wildlife is urging extra caution from all those fond of a good old-fashioned crayfish boil, after discovering a particularly aggressive variety of the small crustacean 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 ...

Rusty crayfish have been found in the Upper Colorado River Basin for the first time. That's according to Colorado Parks and Wildlife, which says the discovery in Grand County of the 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 ...

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 ...