Not only is there a large commercial harvest of Louisiana red swamp crayfish (Procambarus clarkii), and not only is it a terribly invasive pest species in many parts of the world, they are the “white lab rat” of crustacean research. But this picture shows why many people in the southern U.S. call them, “mud bugs.”
From user birdgal5 on Flickr, used under a Creative Commons license.
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