Critterature: Concerning the Crafty Crayfish

By many aliases they're known: Crawfish, crawdads, mudbugs, yabbies. They abound in brooks, and streams, and swamps, As well as roadside ditches and rice paddies. Their astacology has shown They prey like scavengers and mobsters, While some, more taxonomically aloof, Try hard to pass as mountain lobsters. Throughout the world as food they're meant, Both from the wild and from the grocer, But not as a substitute for meat at Lent Because they're not considered kosher. And so the cunning, craven crayfish, The ones that didn't get away, End up in boils, or bisques, or soups, If not served up as étouffés In swanky overpriced cafés.