| Main Food | Percent |
Trophic Level (y) |
Predator Life Stage | Country | Locality | Ref. |
|---|---|---|---|---|---|---|
| zoobenthos | 50 | 3.3 | juv./adults | Sweden | Gräsö Is, south Bothnian Sea, 1982 | 30507 |
| zoobenthos | 63 | 4.0 | juv./adults | Russia | Lake Bol'shoe Lebyazh'e, Arkhangel Province, 1981 | 9061 |
| zooplankton | 29 | 3.3 | larvae | Germany | Barther Bodden, April & July 1987 & 1987, April 1989 | 30592 |
| zooplankton | 56 | 3.1 | larvae | Germany | Barther Strom, 1990-1991 | 30592 |
| zooplankton | 78 | 4.1 | juv./adults | UK Scotland | Loch Kinord and Loch Davan | 4843 |
| nekton | 30 | 4.4 | adults | UK Scotland | Loch Kinord and Loch Davan | 4843 |