| Country | Puerto Rico | Ecosystem | |
| Locality | Cidra and La Plata Reservoirs | Depth | |
| Introduced | Year Intro. | 1998 | |
| Life Stage | adult | unsexed | |
| Quantitative | 10 | Unit | numbers/m^2 |
| Semi Quantitative | <100 | Unit | numbers/m^2 |
| Qualitative | very common | ||
| Year | 2000 - 2000 | Period | 1975-2000 |
| Date | 2000-05-01 00:00:00 - 2000-05-31 00:00:00 | Record Type | observation |
| Record Type | observation | ||
| Seasonal | Method | random sampling | |
| Remarks | Observed in May 2000 (dates assumed). Abundance is much greater than those of native Puerto Rican bivalves (Eupera portiricensis and Pisidium casertanum). | ||