Crayfish is available fresh or deep-frozen, but also canned. Moreover, crayfish meat is used for crayfish soups, crayfish butter, crayfish paste and other fish dishes.
Shrimps, lobster, emperor garnet and spiny lobster belong to the family of the crayfish.
Possible cross reactions: Crayfish belong to the so called molluscs and are high in tropomyosin, the main allergen of the dust mite. People who are allergic or sensitised to dust mites can react to crayfish without ever having eaten one.