Abundant in the swamps and marshes across south Louisiana, crawfish were a favorite food of early residents. Centuries later, crawfish season in Louisiana is still exciting, with crawfish boils and backyard parties a time-honored tradition. Commercial sales of crawfish in Louisiana began in the late 1800s.
crawfish is animal that lives among swamps.. I would guess they found themthere and started using them for cooking and fishing and things like that.. since were talking ab Lousiana (the home of swamps and crawfish) crawfish can be found easily
