CLARKSBURG, W.Va. (WBOY) — Almost any species of crayfish can have a mutation that occasionally makes them blue, but West Virginia has four distinct species that are almost always blue.

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 time the ...

Rusty crayfish, an invasive species, has been discovered in the Little Thompson River in Larimer County, Colorado. This aggressive crayfish, known for its big appetite and rapid reproduction ...

Colorado Parks and Wildlife (CPW) confirmed the presence of rusty crayfish in the West Fork Little Thompson River. CPW said it is the second time the species has been identified east of the ...