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

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1801271 AZMohaveLake Mead2015 15010005 Lake Mead 
1801272 AZMohaveLake Mead2015 15010005 Lake Mead 
1801927 AZSanta Cruz[No locality description provided]2015 15050301 Upper Santa Cruz 
1801928 AZSanta Cruz[No locality description provided]2015 15050301 Upper Santa Cruz 
1464625 CAHumboldtGravel pits near Mad River2015 18010102 Mad-Redwoodestablished
1247381 NEBuffaloNorth Platte River, near Kearney2015 10200101 Middle Platte-Buffaloestablished
1462174 NMSan JuanSan Juan River basin2015 14080106 Chacoestablished
1462177 NMSan JuanSan Juan River basin2015 14080106 Chacoestablished
1462136 NMSan JuanSan Juan River basin2015 14080106 Chacoestablished
1804486 NYSuffolk[No locality description provided]2015 02030202 Southern Long Island 
1462180 UTSan JuanSan Juan River basin2015 14080201 Lower San Juan-Four Cornersestablished
1321936 UTWashingtonRed Hills Desert Garden2015 15010008 Upper Virginestablished

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 [1/12/2026].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

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