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Killer Shrimp

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Killer shrimp
Scientific Name:

Dikerogammarus villosus (Sowinsky, 1894) (CABI)

Common Name:
Killer shrimp
Killer shrimp - Photo by S. Giesen; NOAA, Great Lakes Environmental Research Laboratory
Native To:

Eastern Europe (NAS Database)

Date of U.S. Introduction:

Not introduced

Means of Introduction:

Could enter the U.S. through ballast water discharge (NAS Database)


In Europe, killer shrimp populations have caused significant ecological disruption by reducing biodiversity (NAS Database)

Current U.S. Distribution:
Not currently established


Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Killer Shrimp.


DOCNOAA. Great Lakes Environmental Research Laboratory; DOIUSGS. Wetland and Aquatic Research Center.
Ontario's Invading Species Awareness Program (Canada).
Great Britain Non-Native Species Secretariat.
Great Britain Non-Native Species Secretariat.

State and Local Government


Tip of the Mitt Watershed Council (Michigan).


  • CABI. Invasive Species Compendium. Dikerogammarus villosus. CAB International. [Accessed Mar 5, 2015].

  • Great Lakes Aquatic Nonindigenous Species Information System and Nonindigenous Aquatic Species Database. Fact Sheet - Killer Shrimp. USGS, Gainesville, FL. [Accessed Jul 19, 2016].