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 ...

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 ...

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 ...

DENVER — 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. This is the first ...

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 ...