| Specimen ID | 1711180 |
| Group | Fishes |
| Genus | Gambusia |
| Species | affinis |
| Common Name | Western Mosquitofish |
| State | PA |
| County | Lancaster |
| Locality | Grubb Lake, the sandy shoreline near the playground and shelters |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Susquehanna |
| HUC8 Number | 02050306 |
| HUC10 Name | Chickies Creek |
| HUC10 Number | 0205030608 |
| HUC12 Name | Lower Chickies Creek |
| HUC12 Number | 020503060804 |
| Map | |
| Collection Day | 31 |
| Collection Month | 5 |
| Collection Year | 2022 |
| Year Accuracy | Actual |
| Potential Pathway | stocked for biocontrol | dispersed |
| Comments | Gambusia were already reported in Grubb Lake; my student and I confirmed they are indeed G. affinis based on the lack of spines on the third ray of the gonopodium (see image below). 100 is a very rough estimate of what we saw; based on our observation there are far more in the lake. |
| Record Type | NAS sighting report |
| Freshwater/Marine | Freshwater |
| Number Collected | 100 |
| Photo | |
