Are Crayfish Considered Fish?

Are Crayfish Considered Fish? Crayfish aren’t fish—they’re shellfish. Other types of crustaceans include crabs, lobsters, and shrimp. There are several different species of both freshwater and saltwater crayfish. Freshwater ones are also referred to by the names crawfish, crawdad, and crawdaddy. Are crawfish bugs or fish? Crawfish (or crayfish), lobsters, crabs, and shrimp are Crustaceans,