Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Fishes
Native Transplant
Collection Info
Point Map
Species Profile
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9 results for Gambusia affinis (Western Mosquitofish)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
620944 CAHumboldtEureka Slough, Upper2000 18010102 Mad-Redwoodestablished
272665 CAHumboldtEureka Slough, upper, Arcata Bay.2001 18010102 Mad-Redwoodestablished
1464625 CAHumboldtGravel pits near Mad River2015 18010102 Mad-Redwoodestablished
271923 CAHumboldtMad River backwater area downstream of Hwy 1012010 18010102 Mad-Redwoodestablished
272667 CAHumboldtMad River, backwater area on the north side 200 meters west of Highway 101 bridge2010 18010102 Mad-Redwoodestablished
748121 CAMendocinoLake Cleone in Mac Kerriker State Park, 3.5 miles north of Fort Bragg at mouth of Mill Creek1975 18010108 Big-Navarro-Garciaestablished
747866 CAMendocinoPudding Creek, at N edge Ft. Bragg1988 18010108 Big-Navarro-Garciaestablished
1678526 CASonoma[No locality description provided]2019 18010110 Russian 
747865 CASonomaWillow Creek mouth in Russian River at corsing of Willow Creek Rd.1988 18010110 Russianestablished

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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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 [1/13/2025].

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