Crayfish

Crayfish, crawfish, or crawdads - members of the superfamilies Astacoidea and Parastacoidea - are freshwater crustaceans resembling small lobsters, to which they are related. They breathe through feather-like gills and are found in bodies of water that do not freeze to the bottom; they are also mostly found in brooks and streams where there is fresh water running. Australasia is a centre of crayfish diversity, with over 100 species in a dozen generally. Different species of crayfish come in variety of colors. Some are found as one solid color, while other species are a variety of colors, such as a blue crayfish with some pink along its shell.