no
The question might presume a fact not in evidence: fiddler crabs are not chordates (phylum chordata, with internal skeletons) but instead are phylum arthropoda, characterized by segmented bodies, an exoskeleton made from chitin, and joint appendages.
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 are not
They're in the crustation or the crabs group.
crabs are nocturnal
you kill the fiddler crab
fiddler crabs drink fresh water.
Fiddler crabs have clear scales over their eyes, but they do not have eye lids that move like we do.