| Specimen ID | 269227 |
| Group | Fishes |
| Genus | Gambusia |
| Species | affinis |
| Common Name | Western Mosquitofish |
| State | PA |
| County | Lancaster |
| Locality | Grubb Lake in West Hempfield Township |
| Mapping Accuracy | Approximate |
| HUC8 Name | Lower Susquehanna |
| HUC8 Number | 02050306 |
| Map | |
| Collection Day | 11 |
| Collection Month | 4 |
| Collection Year | 2010 |
| Year Accuracy | Actual |
| Potential Pathway | stocked for biocontrol |
| Status | established |
| Comments | Probably this species rather than G. holbrooki; not definitively identified. Observed these fish last year for the first time in the lake; apparently they over-wintered. |
| Record Type | NAS sighting report |
| Freshwater/Marine | Freshwater |
