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Killer Shrimp

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

Dikerogammarus villosus (Sowinsky, 1894) (CABI)

Common Name: 

Killer shrimp

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



Google. YouTube; Alien Invaders.

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.
Federal Government
State and Local Government
Tip of the Mitt Watershed Council (Michigan).

Invasive Species Centre (Ontario).


  • 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].