| Country | United States (contiguous states) | Ecosystem | Great Lakes |
| Locality | Lake Michigan | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | adult | unsexed | |
| Quantitative | Unit | ||
| Semi Quantitative | 0 | Unit | numbers/m^3 |
| Qualitative | |||
| Year | 1978 - | Period | 1975-2000 |
| Date | 1978-10-01 00:00:00 - 1978-11-30 00:00:00 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | Method | ||
| Remarks | Abundance was low <30/m^3). | ||