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You are here: Home / Aquatic Species / Species Profiles / New Zealand Mud Snail
Aquatic Species
Species Profiles

New Zealand Mud Snail

New Zealand mud snails

Scientific name: Potamopyrgus antipodarum (J. E. Gray, 1853) (ITIS)

Synonyms: Hydrobia jenkinsi (Smith E. A., 1884), Potamopyrgus jenkinsi (Smith, 1889) (CABI)

Common name: New Zealand mud snail, Jenkin's spire shell

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Selected Resources

Native To: New Zealand (NAS Database)

Date of U.S. Introduction: First discovered in Idaho in 1987 (NAS Database)

Means of Introduction: Unknown; possibly through ballast water or game fish imports (Zaranko et al. 1997; NAS Database)

Impact: Unknown; may displace and compete with native invertebrates (NAS Database)

Current U.S. Distribution: West Coast; Great Lakes; Chesapeake Bay



Selected Resources:

Council or Task Force

Species of Concern Fact Sheet: New Zealand Mudsnail
Aquatic Nuisance Species Task Force.

Stop the Invasion: New Zealand Mud Snail (Jun 2016; PDF | 408 KB)
Washington State Recreation and Conservation Office. Washington Invasive Species Council.
See also: Outreach and Educational Materials - Invasive Species Fact Sheets for more resources


The Quiet Invasion: A Guide to Invasive Species of the Galveston Bay Area - New Zealand Mud Snail
Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC).

Invasive Species Compendium - Potamopyrgus antipodarum
CAB International.

NOBANIS: Invasive Alien Species Fact Sheet - Potamopyrgus antipodarum (2010; PDF | 155 KB)
European Network on Invasive Alien Species.
See also: NOBANIS Fact Sheets for invasive alien species of the European region, covering both animals and plants, as well as microorganisms

Non-native Species Information: Jenkins' Spire Snail
Great Britain Non-Native Species Secretariat.

Global Invasive Species Database - Potamopyrgus antipodarum (mollusc)
IUCN. Species Survival Commission. Invasive Species Specialist Group.

Invaders Factsheet: Invasive Snails
Ontario's Invading Species Awareness Program (Canada).

Federal Government

Invasive Animal Species: Mud Snails
DOI. NPS. Yosemite National Park.

Nonindigenous Aquatic Species Database: Fact Sheet - New Zealand Mudsnail
DOI. USGS. Wetland and Aquatic Research Center.
Provides distribution maps and collection information (State and County).

National Exotic Marine and Estuarine Species Information System (NEMESIS) - Potamopyrgus antipodarum
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.

International Government

Non-Native Species: Potamopyrgus antipodarum
Joint Nature Conservation Committee (United Kingdom).

State Government

Aquatic Invasive Species: New Zealand Risk Analysis for Arizona (Jul 2010; PDF | 396 KB)
Arizona Game and Fish Department.
See also: Aquatic Invasive Species for additional risk analyses and related species information

New Zealand Mudsnail
Colorado Parks and Wildlife.

Aquatic Invasive Species: New Zealand Mudsnail (Apr 2005; PDF | 122 KB)
Indiana Department of Natural Resources.
See also: Invasive Species for exotic animal and plant pests invading Indiana, causing economic and visual damage

Aquatic Nuisance Species List - New Zealand mudsnail (Potamopyrgus antipodarum)
Kansas Department of Wildlife, Parks, and Tourism.

Aquatic Invasive Species - Potamopyrgus antipodarum
Washington Department of Fish and Wildlife.

King County Invader: New Zealand Mudsnail
King County Department of Natural Resources (Washington). Water and Land Resources Division.

New Zealand mudsnail (Potamopyrgus antipodarum)
Wisconsin Department of Natural Resources.


New Zealand Mudsnails
University of California. Division of Agricultural and Natural Resources. Cooperative Extension.

New Zealand Mud Snail, Potamopyrgus antipodarum
University of California - Riverside. Center for Invasive Species Research.

Invasive Species: New Zealand Mud Snail
University of California, Santa Barbara. Marine Science Institute. Riparian Invasions Research Laboratory.

New Zealand Mudsnails: How to Prevent the Spread of New Zealand Mudsnails through Field Gear (Second Edition - Feb 2010)
Oregon Sea Grant.

Factsheet: New Zealand Mudsnail
Pennsylvania State University. Pennsylvania Sea Grant.
See also: Aquatic Invasive Species: Resources for additional species information

Invasive Species Fact Sheets - New Zealand Mud Snail
University of Wisconsin Sea Grant Institute.


CABI. Invasive Species Compendium. Potamopyrgus antipodarum. CAB International. [Accessed Nov 27, 2015].

Integrated Taxonomic Information System. Potamopyrgus antipodarum. [Accessed Sep 10, 2014].

Nonindigenous Aquatic Species Database. Fact Sheet - New Zealand Mudsnail. USGS, Gainesville, FL. [Accessed Sep 16, 2014].

Zaranko, D.T., D.G. Farara, and F.G. Thompson. 1997. Another exotic mollusc in the Laurentian Great Lakes: the New Zealand native Potamopyrgus antipodarum (Gray 1843) (Gastropoda, Hydrobiidae) Canadian Journal of Fisheries and Aquatic Sciences 54(4):809-814.

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Last Modified: Aug 20, 2018
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