| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| nekton | cephalopods | squids/cuttlefish | small squid | (not available) | juv./adults |
| nekton | finfish | n.a./other finfish | unidentified | Sweden | juv./adults |
| nekton | finfish | n.a./other finfish | unidentified | (not available) | juv./adults |
| zoobenthos | benth. crust. | amphipods | unidentified | (not available) | juv./adults |
| zoobenthos | benth. crust. | crabs | unidentified | (not available) | juv./adults |
| zoobenthos | insects | insects | unidentified | Sweden | juv./adults |
| zoobenthos | worms | n.a./other annelids | unidentified | (not available) | juv./adults |
| zooplankton | plank. crust. | cladocerans | unidentified | Sweden | juv./adults |
| zooplankton | plank. crust. | mysids | unidentified | Russia | juv./adults |
| zooplankton | plank. crust. | plank. copepods | Cyclops | (not available) | juv./adults |
| zooplankton | plank. crust. | plank. copepods | unidentified | Sweden | juv./adults |