Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Native Transplant

57 results for Gambusia affinis (Western Mosquitofish)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1322757 ARCleburneLittle Red1997 11010014 Little Redestablished
29635 CA South Fork Kern River1997 18030002 South Fork Kernestablished
30693 CO Big Thompson drainage1997 10190006 Big Thompsonestablished
30694 CO Cache La Poudre drainage1997 10190007 Cache La Poudreestablished
30691 CO middle South Platte-Cherry Creek drainage1997 10190003 Middle South Platte-Cherry Creekestablished
30692 CO St. Vrain drainage1997 10190005 St. Vrainestablished
748257 KSChaseCottonwood River, approx. 5 mi. SW of Cottonwood Falls1997 11070203 Lower Cottonwoodestablished
748256 KSChaseMiddle Creek, approx. 5 mi. W of Cottonwood Falls1997 11070203 Lower Cottonwoodestablished
748258 KSChaseSouth Fork of Cottonwood River, approx. 2 mi. SE of Cottonwood Falls1997 11070203 Lower Cottonwoodestablished
748259 KSMarionDoyle Creek, approx. 10 mi. S of Marion1997 11070202 Upper Cottonwoodestablished
158609 MO Missouri River (Kansas City, MO to Grand River RM 367.5-250.0)1997 10300101 Lower Missouri-Crookedcollected
1322740 MOBuchananIndependence-Sugar1997 10240011 Independence-Sugarestablished
1322747 MOClarkBear-Wyaconda1997 07110001 Bear-Wyacondaestablished
1322748 MOCrawfordMeramec1997 07140102 Meramecestablished
1322754 MODeKalbPlatte1997 10240012 Platteestablished
1322753 MOGasconadeBourbeuse1997 07140103 Bourbeuseestablished
1322744 MOHarrisonUpper Grand1997 10280101 Upper Grandestablished
1322745 MOHenrySouth Grand1997 10290108 South Grandestablished
158610 MOHowardMissouri River (Glasgow to Osage River RM 220.0-130.4)1997 10300102 Lower Missouri-Moreaucollected
1322743 MOKnoxSouth Fabius1997 07110003 South Fabiusestablished
1322746 MOLacledeUpper Gasconade1997 10290201 Upper Gasconadeestablished
1322749 MOMaconLower Chariton1997 10280202 Lower Charitonestablished
1322750 MOMariesLower Gasconade1997 07140103 Bourbeuseestablished
1322741 MOMillerLower Osage1997 10290111 Lower Osageestablished
1322742 MOOzarkNorth Fork White1997 11010006 North Fork 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.

Data are not available for download from the web site. Please contact NAS staff for a custom query.


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. [2020]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/26/2020].

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 queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.