Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Native Transplant

1509 results for Gambusia affinis (Western Mosquitofish)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
268616   Lake Erie tributaries (unspecified)1986  established
262129   Lake Michigan1923 04190000 Lake Michigancollected
268615   Lake Michigan tributaries1986  established
1702030 AB marsh South of Bow River and North of the Cave and Basin National Historic Site1968   
1702029 AB marsh South of Bow River and North of the Cave and Basin National Historic Site1968   
26205 AK state non-specific1948 19000000 Alaska Regionfailed
1322757 ARCleburneLittle Red1997 11010014 Little Redestablished
1322733 ARFultonSpring1988 11010010 Springestablished
1322734 ARIzardMiddle White1988 11010004 Middle Whiteestablished
1322739 ARJacksonUpper White-Village1988 11010013 Upper White-Villageestablished
1322736 ARLawrenceLower Black1988 11010010 Springestablished
1322738 ARMadisonBeaver Reservoir1988 11010001 Beaver Reservoirestablished
1322732 ARSharpStrawberry1988 11010012 Strawberryestablished
27703 AZ upper Colorado drainage (level 2); widely stocked1980 14070006 Lower Lake Powellestablished
27701 AZ widely stocked in lower Colorado drainage (level 2)1980 15030104 Imperial Reservoirestablished
295556 AZ Gila River Basin2004  established
300048 AZ San Pedro River north of Mexican border1970 15050100 Middle Gilaestablished
27511 AZ state non-specific1926 15000000 Lower Colorado Regionestablished
27939 AZ state non-specific1961 15000000 Lower Colorado Regionestablished
27528 AZ state non-specific1973 15000000 Lower Colorado Regionestablished
27865 AZCochiseHouse Pond, San Bernardino National Wildlife Refuge1983 15080302 San Bernardino Valleyestablished
164004 AZCochiseLeslie Canyon National Wildlife Refuge2005 15080301 Whitewater Drawestablished
324369 AZCochiseMiddle San Pedro River, Hughes Ranch1992 15050202 Upper San Pedroestablished
324370 AZCochiseMiddle San Pedro River, Hughes Ranch1994 15050202 Upper San Pedroestablished
302592 AZCochiseMiddle San Pedro River, Hughes Ranch1995 15050202 Upper San Pedroestablished

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 [5/24/2024].

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