Cajun Crustacean, What the British Call Crayfish

Puzzle 6 of New Orleans Medium Pack

Question is: Cajun Crustacean, What the British Call Crayfish

and the answer is: CRAWFISH

Word Meaning:

CRAWFISH — (United States, especially Southern US, Louisiana and Texas, Midwest, Western US) Any of various freshwater crustaceans: crayfish.

Definitions from Wiktionary.