Also known as Australian Blue Swimmer Crab, Blossom Crab, Blue Crab, Blue Edible Crab, Blue Manna Crab, Blue Swimmer, Bluespot Rock Crab, Edible Flower Crab, Flower Crab, Reticulate Crab, Sand Crab, Southern Blue Swimmer Crab, True Crab.
Found over mud and sand bottoms of subtidal reefs also around mangroves and seagrass beds, burrowing in the substrate when alarmed.
They feed on algae, bivalves and fish.
Males blue, Females olive/brown
Length - 20cm
Depth - 0-65m
Brachyura crabs are considered true crabs, they have a short abdomen, four 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/Portunus_armatus