Specimen Information

Potamopyrgus antipodarum
Potamopyrgus antipodarum
(New Zealand mudsnail)
Mollusks-Gastropods
Exotic
Collection Info
Point Map
Species Profile
Animated Map
Impacts

Specimen ID1687213
GroupMollusks-Gastropods
GenusPotamopyrgus
Speciesantipodarum
Common NameNew Zealand mudsnail
StateCA
CountySanta Clara
LocalityAlamitos Creek, under Graystone Bridge, Santa Clara County
Mapping AccuracyAccurate
HUC8 NameCoyote
HUC8 Number18050003
HUC10 NameGuadalupe River-Frontal San Francisco Bay Estuaries
HUC10 Number1805000303
HUC12 NameAlamitos Creek
HUC12 Number180500030301
Map
Collection Day17
Collection Month8
Collection Year2021
Year AccuracyActual
Potential Pathwaydispersed | hitch hiker
Statusestablished
CommentsCDFW identification memo available on request
Record TypeNAS sighting report
VerifierO. Townsend, Valley water
Freshwater/MarineFreshwater
Photo
Potamopyrgus antipodarum

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/23/2025].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.