| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| nekton | finfish | bony fish | Clupea harengus membras | (not available) | juv./adults |
| nekton | finfish | bony fish | Osmerus eperlanus | (not available) | juv./adults |
| nekton | finfish | bony fish | Sander lucioperca | (not available) | juv./adults |
| nekton | finfish | bony fish | unidentified | (not available) | adults |
| plants | other plants | benthic algae/weeds | unidentified algae | Russia | juv./adults |
| zoobenthos | benth. crust. | amphipods | unidentified | (not available) | juv./adults |
| zoobenthos | insects | insects | unidentified | (not available) | juv./adults |
| zoobenthos | insects | insects | unidentified | (not available) | juv./adults |
| zoobenthos | insects | insects | unidentified | (not available) | juv./adults |
| zoobenthos | insects | insects | unidentified | (not available) | juv./adults |
| zoobenthos | other benth. invertebrates | n.a./other benth. invertebrates | unidentified spiders | (not available) | juv./adults |
| zooplankton | plank. crust. | mysids | unidentified | (not available) | juv./adults |
| zooplankton | plank. crust. | n.a./other plank. crustaceans | unidentified | (not available) | juv./adults |