Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Native Transplant

15 results for Gambusia affinis (Western Mosquitofish)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
36380 MT Clark Fork River at southern end of basin1990 17010201 Upper Clark Forkcollected
36376 MT scattered locations in the Missouri drainage1990 10040101 Bullwhacker-Dogcollected
238797 MT state non-specific1996  established
166832 MT state non-specific1999  stocked
36565 MTCascadeClark Fork drainage1971 17010200 Pend Oreillecollected
36377 MTFlatheadFlathead River, near Columbia Falls1990 17010208 Flathead Lakecollected
163127 MTGraniteBearmouth, Granite County, high-altitude, thermal spring fed pond in the Columbia River drainage1959 17010202 Flint-Rockestablished
163126 MTGraniteBearmouth, Granite County, high-altitude, thermal spring fed pond in the Columbia River drainage1961 17010202 Flint-Rockestablished
36564 MTGraniteClark Fork drainage, a second pond1971 17010201 Upper Clark Forkcollected
36562 MTGraniteClark Fork drainage, pond1959 17010201 Upper Clark Forkestablished
36563 MTGraniteClark Fork drainage, pond1971 17010200 Pend Oreilleextirpated
36647 MTGraniteClark Fork River, upper, between Flint and Rock Rivers1980 17010201 Upper Clark Forkestablished
543632 MTMadisonTrudau Pond near Ruby Reservoir1985 10020003 Rubyunknown
286299 MTPhillipsPlunge, The1994 10040104 Fort Peck Reservoirstocked
36381 MTSweet GrassYellowstone River near Boulder River1990 10070002 Upper Yellowstonecollected

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 [5/24/2024].

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