Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Native Transplant

34 results for Gambusia affinis (Western Mosquitofish)
Download Data
Click here for listing in all states

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
44653 UT Great Salt Lake1980 16020310 Great Salt Lakeestablished
44545 UT state non-specific1931  established
44406 UT state non-specific1931  established
44683 UT state non-specific1961  established
44407 UT state non-specific1973  established
44619 UT state non-specific1992  established
44541 UTBox Eldermany localities north of Salt Lake City1945 16020300 Great Salt Lakeestablished
44538 UTDavismany localities north of Salt Lake City1945 16020300 Great Salt Lakeestablished
268347 UTGarfieldColorado River, Cataract Canyon (RK 326-344)1993 14070001 Upper Lake Powellestablished
157553 UTGrandColorado River at Arches National Park1999 14030005 Upper Colorado-Kane Springsestablished
44854 UTGrandGreen River just above Price River1982 14060005 Lower Green-Desolation Canyoncollected
164003 UTJuabFish Springs National Wildlife Refuge2005 16020306 Southern Great Salt Lake Desertestablished
44540 UTMorganmany localities north of Salt Lake City1945 16020100 Weberestablished
44535 UTSalt LakeSalt Lake City and vicinity1945 16020204 Jordanestablished
1459064 UTSan JuanColorado River and Green River at Canyonlands National Park1986 14070001 Upper Lake Powellestablished
157903 UTSan JuanColorado River and Green River at Canyonlands National Park1999 14070001 Upper Lake Powellestablished
268345 UTSan JuanColorado River, above the confluence of the Green River (RK 0-80)1993 14030005 Upper Colorado-Kane Springsestablished
268346 UTSan JuanColorado River, from the confluence of the Colorado and Green Rivers to the first rapid in Cataract Canyon (RK 344-350)1993 14070001 Upper Lake Powellestablished
268348 UTSan JuanColorado River, Lake Powell inflow (RK 316-326)1993 14070001 Upper Lake Powellestablished
268344 UTSan JuanGreen River, from Mineral Bottom to its mouth1993 14060008 Lower Greenestablished
44544 UTSan Juanoverflow of a piped spring at Bluff1960 14080201 Lower San Juan-Four Cornersestablished
1462180 UTSan JuanSan Juan River basin2015 14080201 Lower San Juan-Four Cornersestablished
1702402 UTSan JuanSan Juan River outside of Bluff, Utah1993 14080201 Lower San Juan-Four Corners 
44543 UTTooelebubbling spring just off Lake Point at the north end of the Oquirrh Mountains along the southern margin of Great Salt Lake1942 16020204 Jordanestablished
44537 UTUtahPayson1945 16020202 Spanish Forkestablished

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.


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. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [7/21/2024].

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