How will the female fiddler crab pick a mate? By the quality of his lodging, the allure of his wave—and, especially, the size of his claw. The female fiddler crab has two small, symmetrical ...

the legs that hold their claws, though females have wider abdomens to hold their eggs. These slow-moving crabs don’t hunt, preferring to scavenge for dead animal or plant matter, though they may ...