| Country | Japan | Ecosystem | Kuroshio Current |
| Locality | Tokoro, Hokkaido | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | adult | unsexed | |
| Quantitative | 5.71 | Unit | numbers/m^2 |
| Semi Quantitative | <100 | Unit | numbers/m^2 |
| Qualitative | very common | ||
| Year | 1989 - 1989 | Period | 1975-2000 |
| Date | 1989-08-01 00:00:00 - 1989-08-30 00:00:00 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | not specified | Method | quadrats |
| Remarks | Abundance for August 1989 (dates assumed). | ||