Also known as Brachyura Crab, Commensal Crab, Coral Crab, Guard Crab, Red-spotted Coral Crab, Swimmer Crab, Tiger Coral Crab, True Crab.
Found singly, or in pairs, living between the finger-like branches, of Acropora/Pocillopora corals, defending the corals from predators, over coral and rocky reefs.
They feed on coral mucus and tissue.
Length - 1.5cm
Depth - 1-90m
Coral Crabs are able to defend their territory from the Crown-of-Thorns Seastar!
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/Trapezia