Scientists have described a new species of colorful crayfish—and it might already be sitting in your aquarium. The ...

The Black Creek crayfish is colorful, with a black carapace, a white or yellow dorsal stripe and a rust-colored abdomen with black stripes. The species occupies a small range in the lower St. Johns ...

They’re barely noticeable. But they extend 6 feet into the ground, and are home to Wisconsin’s rarest crayfish species, the prairie crayfish. Helen Holtz, an ecologist with the Waukesha County Land ...