The crawfish was designated the official state crustacean of Louisiana in 1983. South Louisiana is the crawfish capital of the world. Also called crayfish, mudbugs or crawdads, the crawfish resembles a very small lobster. Coloring varies depending on the water it lives in. There are more than 500 species of crawfish (Procambarus clarkii); over half live in North America. In Louisiana, two species are harvested: the red swamp and the white river crawfish.