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Paradexamine sp. SD1
Image courtesy of E. A. Lazo-Wasem, Yale Peabody Museum of Natural History through the CC0 1.0 license.
Paradexamine sp. SD1
Taxonomic Group: Crustaceans-Amphipods


Paradexamine SD1 is an unidentified marine free-living amphipod. The genus is known from Australia, Asia, South America and Africa, but it does not correspond to any known species and is of unknown origin. It has been introduced to California where it ranges from San Francisco Bay to San Diego. It is generally associated with marine fouling communities, often on or among algae and marine invertebrates. Possible vectors for its introduction include hull fouling on recreational boats or commercial ships and ballast water.

* 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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