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Killer Shrimp

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

Killer shrimp
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Killer shrimp


Photo by S. Giesen; NOAA, Great Lakes Environmental Research Laboratory

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Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Federal Government
State and Local Government
  • CABI. Invasive Species Compendium. Dikerogammarus villosus. CAB International. [Accessed Aug 10, 2023].

  • Great Lakes Aquatic Nonindigenous Species Information System and Nonindigenous Aquatic Species Database. Fact Sheet - Killer Shrimp. USGS, Gainesville, FL. [Accessed Aug 10, 2023].