Is a crawfish an amphibian

No, a crawfish is not an amphibian. Crawfish are crustaceans, belonging to the same group as crabs and lobsters. Amphibians are a separate class of animals that includes frogs, toads, salamanders, and newts. Amphibians are characterized by their dual life cycle, spending part of their lives in water and part on land, as well as having moist, permeable skin.