Taxonomy Search:

Caprella mutica
Image courtesy of Gail Ashton, Smithsonian Environmental Research Center
Caprella mutica
Taxonomic Group: Crustaceans-Amphipods


Caprella mutica is a caprellid amphipod. It is native to the Northwest Pacific and was first described in 1939 from Peter the Great Bay, Russia. It is introduced to the East (Connecticut-Quebec) and West coasts (California-Alaska) of North America, Europe (from France to Norway and Germany), and New Zealand. Caprellids are capable of long-distance dispersal on floating seaweeds or other objects, but ballast water, ship fouling, and the culture of Pacific Oysters (Crassostrea gigas) are likely vectors for the transport of C. mutica to different regions of the world. It has been found clinging onto vegetation, hydroids, bryozoans, and man-made structures. In introduced regions it can reach very high densities, potentially affecting aquaculture operations and competing with native species of amphipods.

This is some default tab content, embedded directly inside this space and not via Ajax. It can be shown when no tabs are automatically selected, or associated with a certain tab, in this case, the first tab.


Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
Access Date:

Marine Invasions Lab
Smithsonian Environmental Research Center

P.O. Box 28
647 Contees Wharf Road
Edgewater, MD 21037-0028 Tel: 443 482 2200
Fax: 443 482 2380

Databases Overview| Chesapeake Bay | National Database |