Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Fishes
Native Transplant
Collection Info
Point Map
Species Profile
Animated Map

24 results for Gambusia affinis (Western Mosquitofish)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
268616   Lake Erie tributaries (unspecified)1986  established
268615   Lake Michigan tributaries1986  established
1458929 CA San Joaquin (HUC6) non-specific1986 18040000 San Joaquinestablished
30289 CO San Luis Valley (Rio Grande headwaters drainage)1986 13010003 San Luisestablished
270650 KY Kentucky River1986 05100200 Kentuckyestablished
34582 KY Kentucky River1986 05100200 Kentuckyestablished
34581 KY Salt River1986 05140102 Saltestablished
34591 KY Tygarts Creek and Little Sandy River1986 05090104 Little Sandyestablished
34587 KYGreenupTygarts Creek1986 05090103 Little Scioto-Tygartscollected
34590 KYLewisKinniconick Creek1986 05090201 Ohio Brush-Whiteoakestablished
34585 KYMcCrearyCumberland River, middle, below falls1986 05130101 Upper Cumberlandestablished
34589 KYPendletonSouth Fork Licking River1986 05100102 South Fork Lickingestablished
1322681 NMChavesUpper Pecos-Long Arroyo1986 13060007 Upper Pecos-Long Arroyoestablished
1322679 NMDe BacaUpper Pecos1986 13060003 Upper Pecosestablished
1322678 NMEddyUpper Pecos-Black1986 13060011 Upper Pecos-Blackestablished
1322682 NMRooseveltTaiban1986 13060004 Taibanestablished
1322675 NMSan MiguelPecos Headwaters1986 13060001 Pecos Headwatersestablished
268700 NYSuffolkLong Island waters1986 Unknown or N/Aestablished
269369 OH Muskingum River drainage1986 05040004 Muskingumestablished
1322680 TXCulbersonDelaware1986 13070002 Delawareestablished
1322713 TXPecosPecos1986 13070008 Pecosestablished
1322676 TXReevesLower Pecos-Red Bluff Reservoir1986 13070001 Lower Pecos-Red Bluff Reservoirestablished
1459064 UTSan JuanColorado River and Green River at Canyonlands National Park1986 14070001 Upper Lake Powellestablished
860782 WYLaramieHorse Creek1986 10180012 Horseestablished

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.

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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/20/2026].

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