| Country | Canada | Ecosystem | |
| Locality | Lake Ontario (epilimnetic) | Depth | |
| Introduced | Year Intro. | 1982 | |
| Life Stage | not specified | unsexed | |
| Quantitative | 159900 | Unit | numbers/m^2 |
| Semi Quantitative | Unit | ||
| Qualitative | |||
| Year | 1982 - | Period | 1975-2000 |
| Date | 1982-01-01 00:00:00 - 1982-12-31 00:00:00 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | Method | ||
| Remarks | Population estimate in epilimnetic water samples (Ref. 90006). | ||