Also known as Adam's Urchin Crab, Brachyura Crab, Criniod Crab, Fire Urchin Crab, Sea Urchin Crab, True Crab, Urchin Crab, Zebra Crab.
Found singly or in pairs, living in the arms of short spined sea urchins, over coral and rocky reefs.
They feed on their hosts tissue and tubed feet which quickly regenerate.
Length - 2cm
Depth - 5-15m
Brachyura crabs are considered true crabs, they have a short abdomen, 4 walking legs and a pair of clawed arms at the front.
Many thousands of species live worldwide in sea water, fresh water and on land. Ref: https://en.wikipedia.org/wiki/Zebrida_adamsii