| Specimen ID | 237438 |
| Group | Fishes |
| Genus | Gambusia |
| Species | affinis |
| Common Name | Western Mosquitofish |
| State | PR |
| County | Patillas |
| Locality | Patillas Reservoir |
| Mapping Accuracy | Accurate |
| HUC8 Name | Southern Puerto Rico |
| HUC8 Number | 21010004 |
| HUC10 Name | Rio Guamani to Rio Jacaboa Watersheds |
| HUC10 Number | 2101000405 |
| HUC12 Name | Rio Grande de Patillas at Lago Patillas Dam |
| HUC12 Number | 210100040506 |
| Map | |
| Collection Month | 1 |
| Collection Year | 1927 |
| Year Accuracy | Actual |
| Potential Pathway | stocked for biocontrol |
| Status | established |
| Record Type | Specimen |
| Disposal | Smithsonian National Museum of Natural History |
| Museum Cat Number | USNM 88340 |
| Freshwater/Marine | Freshwater |
| Number Preserved | 5 |
