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Neither of these animals lives in a freshwater aquarium environment. They are creatures of the sea shores, beaches and mangroves.
they eat humans fiddler crabs eat other smaller crabs
by rubbing their big claw on there body
Ghost crabs? Well that depense if it is a dead fiddler crab so it would be the same/
yes they are
no
== == == ==
?
no they are not
you kill the fiddler crab
fiddler crabs drink fresh water.
crabs are nocturnal