Why do fiddler crabs have exoskeleton?

Answer 1

The hermit crabs first pair of legs are their claws which they use for drinking, eating, and defense. The second, third, and fourth pair are for walking. The fith - tenth are for holding it's abomen inside it's shell.

Answer 2

THey have 8 legs and two arms, legs fall off when they are molting.

Answer 3

Because of the motions of their appendages. The movements are similar to someone playing a violin.

Answer 4

they have six i think.

Answer 5

to attract females