Taxonomy Search:

Orientomysis aspera
Image courtesy of Julius Fürst (1861-1938), under the US public domain tag. Please note that this is a generic mysid image and not species specific.
Orientomysis aspera
Taxonomic Group: Crustaceans-Mysids
Common name: MYSID


Orientomysis aspera is a mysid crustacean which is native to coastal waters of Japan, Korea and northern China. In 1992, it was found in San Francisco Bay, California. In its native range, it is characteristic of eutrophic estuaries with salinities above 10 PSU; however, in Suisun Bay, San Francisco it appears to withstand a wide range of salinities from 0-30 PSU. This species, and another introduced mysid, Hyperacanthomysis longirostris, have largely replaced the formerly dominant native mysid Neomysis mercedi.

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 |