| Country | United States (contiguous states) | Ecosystem | |
| Locality | Johns River | Depth | |
| Introduced | Year Intro. | 1966 | |
| Life Stage | not specified | unsexed | |
| Quantitative | 10000 | Unit | numbers/m^2 |
| Semi Quantitative | 1000-50000 | Unit | numbers/m^2 |
| Qualitative | extremely abundant | ||
| Year | 1976 - 1976 | Period | 1975-2000 |
| Date | 1976-01-01 00:00:00 - 1976-12-31 00:00:00 | Record Type | observation |
| Record Type | observation | ||
| Seasonal | Method | ||
| Remarks | Observed abundance in 1976 (dates assumed). | ||