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 wildlife officials are raising the alarm after an aggressive invasive species was discovered in the West Fork Little Thompson River, the Cool Down reported. The culprit? The rusty crayfish—a ...

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 ...

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 ...

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 ...

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 ...

CHAMPAIGN-URBANA, Ill. (WCIA) — University of Illinois researchers studying an invasive species of crayfish recently made a unique discovery — two new species that had long been mistaken for 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 ...