There are lots of crayfish patterns (a quick check of the FOTW archives found at least 6 crawfish patterns), and this is understandable when you consider how important this freshwater crustacean is to the diet of many fish species. In waters where the crawfish is plentiful, they make up two-thirds or more of the diet of the adult smallmouth bass. Crawfish also are an important staple to largemouth bass, bluegill, and trout. On a trip to New Orleans a few years ago, I even found them tasty myself!