Atlantic Marsh Fiddler Crab (Uca Pugnax) What about claws Male fiddler crabs have one large front claw and one small one, while females and young fiddlers have two small claws. The large claw looks a bit like a fiddle. The male fiddler crab waves this claw and wrestles other males to mark his territory and attract mates. The small claw is needed for gathering food. Fiddlers usually live in ...