Gambusia affinis
Gambusia affinis
(Western Mosquitofish)
Fishes
Native Transplant
Collection Info
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9 results for Gambusia affinis (Western Mosquitofish)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1807820 PABucksBradford Reservoir (BUCKS)2024 02040201 Crosswicks-Neshaminy 
1807819 PAButlerGlade Run Lake (BUTLER)2024 05030105 Connoquenessing 
1737186 PAButlerGlade Run Lake, in vicinity of boat ramp2024 05030105 Connoquenessing 
1886694 PACrawfordPymatuning Lake, at Linesville boat ramp2025 05030102 Shenangoestablished
269227 PALancasterGrubb Lake in West Hempfield Township2010 02050306 Lower Susquehannaestablished
1711180 PALancasterGrubb Lake, the sandy shoreline near the playground and shelters2022 02050306 Lower Susquehanna 
1711179 PALancasterMarshy pool near mouth of Chiques Creek2022 02050306 Lower Susquehanna 
1807821 PAMontgomery[No locality description provided]2024 02040202 Lower Delaware 
1654389 PAMontgomeryHuntingdon Valley, Bryn Athyn, PA, USA2019 02040202 Lower Delawareestablished

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 [12/10/2025].

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