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 ...

Colorado Parks and Wildlife announced the discovery of rusty crayfish in Lake Granby. In a routine Aquatic Nuisance Species sampling done by Parks and Wildlife, multiple crayfish were found in Lake ...

An invasive crayfish species from Australia is posing a threat to the native crayfish species in the Rio Grande Valley, Texas officials warn. Screengrab from Texas Parks and Wildlife video There’s a ...

The non-native and potentially invasive signal crayfish has appeared for the first time in Minnesota, prompting the state to warn that they are illegal without a permit. Officials confiscated 10 ...