Crawfish Versus Crayfish Versus Crawdad

Atlanta

April 17, 2026

Crayfish, crawfish, and crawdad are regional, colloquial names for the same freshwater, lobster-like crustacean (order Decapoda). "Crawfish" is dominant in the Gulf South, "crayfish" is common in the North/scientific contexts, and "crawdad" is used in the Midwest/West. They are generally interchangeable, differing only by location.

Key Regional and Usage Differences:

Crawfish: Preferred in Louisiana, Texas, and Southern regions; often used when referring to them as food (e.g., at a boil).

Crayfish: Commonly used in the Northern US and scientifically; derived from the French écrevisse.

Crawdad: Frequently used in West Coast states, Oklahoma, Arkansas, and central Appalachia.

Other names: Often called "mudbugs" in the South, or simply freshwater lobsters.

All three terms refer to the same small, freshwater crustacean, which is known for its hard shell, claws, and burrowing habits in, lakes, rivers, and swamps.