| Specimen ID | 42331 |
| Group | Fishes |
| Genus | Gambusia |
| Species | affinis |
| Common Name | Western Mosquitofish |
| State | PR |
| County | Guayama |
| Locality | Melania Reservoir near Guayama |
| Mapping Accuracy | Accurate |
| HUC8 Name | Southern Puerto Rico |
| HUC8 Number | 21010004 |
| HUC10 Name | Rio Coamo to Rio Seco Watersheds |
| HUC10 Number | 2101000404 |
| HUC12 Name | Coastal Watersheds West and East of Rio Seco mouth |
| HUC12 Number | 210100040416 |
| Map | |
| Collection Year | 1923 |
| Year Accuracy | Actual |
| Potential Pathway | stocked for biocontrol |
| Status | established |
| Reference 1 |
| Ref. Number: | 1873 |
| Author: | Erdman, D.S. |
| Date: | 1984 |
| Title: | Exotic fishes in Puerto Rico. |
| Publisher: | John Hopkins University Press |
| Pages: | 162-176 |
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| Comments | often confused with Poecilia vivipara |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
