Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Fishes
Native Transplant
Collection Info
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7 results for Gambusia affinis (Western Mosquitofish)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
29635 CA South Fork Kern River1997 18030002 South Fork Kernestablished
748011 CAFresnoFresno Slough, 2.4 miles below Hwy 180 on Mendota Wildlife Refuge1973 18030009 Upper Dryestablished
747884 CAFresnoLos Gatos Creek, at Los Gatos Creek County Park1973 18030012 Tulare Lake Bedestablished
273915 CAGlennnon-specific location in Bakersfield1923 18030003 Middle Kern-Upper Tehachapi-Grapevinestocked
747850 CAKingsS fk. King River, between Jackson Ave and hwy 411987 18030012 Tulare Lake Bedestablished
747904 CATulareDeep Creek at Ave 304 Bridge west of Rd. 1961973 18030006 Upper Tuleestablished
747905 CATulareDeer Creek at 2nd crossing of Rd.120, aboveRd.2631973 18030005 Upper Deer-Upper Whiteestablished

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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [3/5/2026].

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