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Procambarus clarkii
Image courtesy of Duloup, Wikimedia Commons (CC BY-SA 3.0 License)
Procambarus clarkii
Taxonomic Group: Crustaceans-Crayfish


Procambarus clarkii, also known as the Red Swamp Crayfish, is native to the Mississippi and Gulf of Mexico drainages, from Florida, Mexico and New Mexico north to Ohio and Illinois. It is widely distributed around the globe and has been introduced to every continent except Antarctica. It has established non-native populations in the United States, France, Italy, Spain, Portugal, Japan, China, Taiwan, Kenya, and Brazil, among other countries. It is primarily found in marshes, swamps, and slow-flowing rivers, and is tolerant of hypoxic conditions, poor water quality, and salinities up to 20 PSU. It can have negative ecological impacts by competeing with native crayfish species and altering natural habitats.

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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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