no they are not
yes they do have eggs because they are not mammals
yes, fiddler crabs do lay eggs, because they are not mammals and i've never heard of a crab having live babies!
by rubbing their big claw on there body
yes they are
Ghost crabs? Well that depense if it is a dead fiddler crab so it would be the same/
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?
no
They're in the crustation or the crabs group.
crabs are nocturnal
you kill the fiddler crab
fiddler crabs drink fresh water.