Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Native Transplant

14 results for Gambusia affinis (Western Mosquitofish)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
748109 CAOrangeSanta Ana River above Featherly Park.1972 18070203 Santa Anaestablished
748090 CAOrangeSanta Ana River at Featherly Park, about 10mi W. Corona.1972 18070203 Santa Anaestablished
747731 CAOrangeSanta Ana River Valley Canal at Imperial Highway.1972 18070203 Santa Anaestablished
748107 CAOrangeSanta Ana Valley Canal at BM 334.1972 18070203 Santa Anaestablished
748091 CAOrangeVilla Park Dam1972 18070203 Santa Anaestablished
747903 CARiversideRiverside County: Corona; Temescal Creek at Auburndale Street1993 18070203 Santa Anaestablished
747824 CARiversideSanta Ana River at Buena Vista Drive1980 18070203 Santa Anaestablished
747830 CARiversideSanta Ana River at foot of Etiwanda Ave. 1.5 km NE Norco1987 18070203 Santa Anaestablished
748064 CARiversideSanta Ana River at Hammer Avenue Bridge1975 18070203 Santa Anaestablished
748063 CARiversideSanta Ana River, 200 yards below Prado Dam1975 18070203 Santa Anaestablished
747831 CARiversideSunnyslope Channel Creek, from Louis Rubidoux Nature Center, to CA 1.5 km downstream1987 18070203 Santa Anaestablished
747948 CARiversideTrib to Santa Ana River. Maps: 250k - Santa Ana; 24k - Corona North; 100k - Santa Ana2002 18070203 Santa Anaestablished
748208 CASan BernardinoCajon Creek1976 18070203 Santa Anaestablished
748057 CASan BernardinoChino Creek at Highway 831975 18070203 Santa Anaestablished

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 [5/28/2024].

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