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Corophium alienense
Image courtesy of Tricia Bippus, California Department of Fish and Wildlife, IEP Diet and Condition Study. Please note that the specimen has been stained with Rose Bengal dye.
Corophium alienense
Taxonomic Group: Crustaceans-Amphipods


Corophium alienense is a tube-building estuarine amphipod. It was described from San Francisco, California, but is believed to be non-native to the West Coast of North America. It is found in high abundance in soft muddy substrates. Globally, specimens of this species are only known from California, but it has a close affinity to many corophiid from the Northwestern Pacific (Japan, China, and Vietnam). Further sampling and genetic analysis is needed to determine the true origin of this species.

* Content for this species is based on the literature and peer review is pending - if you have comments or feedback please contact Paul Fofonoff at

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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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