Mud crab

Arthropoda – Malacostraca


There are two species of mud crab found in Western Australia, Green and Brown. Green mud crabs can grow up to a 300 mm shell width and 2.5 kgs. Brown mud crabs can grow up to 150 mm shell width and 1.5 kgs. Known for their big claws, mud crabs belong to a group of crabs that have the last pair of legs flattened for swimming. They have a smooth carapace (outer shell). To grow they moult; shedding their old shell once they’ve grown a new bigger one.

Did you know?

If a mud crab loses a claw it can grow back a new one!