The Mud crab is a species of crab which is found in the estuaries and mangroves of Asia, Australia and Africa. It an economically very important crab species. It is also known as Scylla serrata, Mangrove crab, Black crab, Serrated Swimming crab, Giant Mud crab, Mangrove crab, Indo-Pacific Swamp crab, Edible Mud crab etc.