The Mud Crab (or mangrove crab) is a member of the Portunidae family. It inhabits the tropical waters of Australia, Africa and Asia. It prefers soft and muddy seabeds and is often found in estuaries and mangroves. It is a large crab with a characteristic green and brown coloration. Adult specimens feed on smaller crustaceans, invertebrates, and gastropods. It is a very popular species in the Indo-Pacific.