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Scylla serrata
Image courtesy of 自分 via Wikimedia Commons public domain
Scylla serrata
Taxonomic Group: Crustaceans-Crabs
Common name: GIANT MUD CRAB


Scylla serrata, also known as the Giant Mud Crab or the Mangrove Crab, is a swimming crab with an oval carapace. It has a broad native range in the Indian and tropical Western Pacific Ocean, ranging from South Africa, the Red Sea, and southern Japan east to New Zealand and Tahiti. It inhabits estuaries and mangrove swamps, spanning marine and fresh waters. In an attempt to start a fishery, S. serrata was intentionally released to Hawaii and the Gulf coast of Florida. Populations in Florida never established, but S. serrata is now abundant in the Hawaiian Islands. This crab may have ecological impacts as an abundant predator in Hawaiian estuaries, but its impacts are unstudied.

*This species is not currently established in North American waters.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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