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Deltamysis holmquistae
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
Deltamysis holmquistae
Taxonomic Group: Crustaceans-Mysids
Common name: MYSID


Deltamysis holmquistae is a mysid known from fresh and brackish waters. It was first described from the Sacramento-San Joaquin Delta, but very little is known about its distribution and native range. Its relatively recent (1977) appearance and its taxonomic uniqueness are strongly suggestive of introduction, but it has not been reported from any other locations. It is associated with marshes and submerged vegetation, and is most abundant at salinities of 1.1-2.2 PSU, but can survive at 0 to 23 PSU. In general, collections of this mysid are rare and sporadic.

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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
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