Does a crayfish have tail?

Yes, crayfish have a tail. Crayfish are crustacean decapods, which means they have ten legs and are related to shrimp, lobsters, and crabs. Crayfish have two main body parts, the cephalothorax and the abdomen, and the tail is part of the abdomen. The tail is made up of six segments and is used for swimming and as a rudder to help the crayfish move through water. Crayfish can move their tails rapidly to escape from predators or to propel themselves through the water.