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

95 results for Gambusia affinis (Western Mosquitofish)
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Page:1234
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
29362 CA lower Carson River near Los Angeles1934 18070100 Ventura-San Gabriel Coastalestablished
29363 CA lower Carson River near Los Angeles1934 18070100 Ventura-San Gabriel Coastalestablished
282196 CA Santa Clara drainage1975 18070102 Santa Claraestablished
29496 CA upper portions of the Santa Clara River system1977 18070102 Santa Claraestablished
28978 CA South California drainage1976 18070102 Santa Claraestablished
1678015 CALos Angeles[No locality description provided]2018 18070105 Los Angeles 
747939 CALos Angeles300m upstream of Sepulveda dam on the Los Angeles River1969 18070105 Los Angelesestablished
747940 CALos Angeles300m upstream of Sepulveda dam on the Los Angeles River1969 18070105 Los Angelesestablished
747996 CALos AngelesArroyo Seco1933 18070105 Los Angelesestablished
748276 CALos AngelesArroyo Seco, 100 yds above and below Colorado blvd (210 Fwy) Pasadena1972 18070105 Los Angelesestablished
747817 CALos AngelesBallona Marsh1980 18070104 Santa Monica Bayestablished
747818 CALos AngelesBallona Marsh1980 18070104 Santa Monica Bayestablished
747787 CALos AngelesBallona Marsh1981 18070104 Santa Monica Bayestablished
747819 CALos AngelesBallona Marsh1981 18070104 Santa Monica Bayestablished
747788 CALos AngelesBallona Marsh1981 18070104 Santa Monica Bayestablished
747789 CALos AngelesBallona Marsh1981 18070104 Santa Monica Bayestablished
748110 CALos AngelesBig Tujunga Creek 3 miles south of upper Trail Canyon Road.1972 18070105 Los Angelesestablished
747732 CALos AngelesCastaic Creek at Highway 126.1972 18070102 Santa Claraestablished
748048 CALos AngelesCentinela Channel1975 18070104 Santa Monica Bayestablished
748277 CALos AngelesCity of Industry, trib to San Jose Creek1972 18070106 San Gabrielestablished
748019 CALos AngelesCompton, Dominguez Rancho1936 18070106 San Gabrielestablished
747798 CALos AngelesEcho Park Lake1984 18070104 Santa Monica Bayestablished
748020 CALos AngelesGriffith Park1934 18070105 Los Angelesestablished
748054 CALos AngelesHasley Canyon Creek, dirt road north of 126 (approximately 1 miles east from) Interstate 51975 18070102 Santa Claraestablished
747997 CALos AngelesLos Angeles River1931 18070105 Los Angelesestablished
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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. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/2/2025].

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.