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Male red-jointed fiddler crabs have one large claw and one relativly small claw. The female fiddler crab has two normal sized claws. They both are chestnut brown with a gray color in the front. The claws of this crab has red joints. They have eight walking legs that are either olive or grayish brown in color. Near the center of the shell, called the carapace, there is a H-shaped depression. Behind the eye there are horizontal depressions (Zhong, date unknown). The eyes Uca minax have are compound. This means they are attached by eye stalks. The male can either be right or left clawed, meaning the large claw can appear on the right or left side of the crab. (Chesapeake Bay Program 1999).

Other Physical Features: ectothermic ; bilateral symmetry


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Source: Animal Diversity Web

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