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Palaemon modestus
Image courtesy of Robert L. Emmett, Northwest Fisheries Science Center, Seattle, WA. Reproduced from Emmett et al. (2002) Introduction of a Siberian freshwater shrimp to western North America., Biological Invasions 4: 447-450
Palaemon modestus
Taxonomic Group: Crustaceans-Shrimp


Palaemon modestus, the Siberian Prawn, is native to eastern Asia, from the Amur River Basin, Russia, through southern China. This species has been introduced to the Western Coast of North America and is found in parts of Washington, Oregon and California. Throughout its native and introduced range P. modestus is usually restricted to fresh and oligohaline waters (0-4 PSU), occurring in large rivers, lakes, and reservoirs. Palaemon modestus has become abundant in the Columbia River and San Francisco estuaries, but detailed studies of its ecological and economic impacts have not been made.

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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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