| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| detritus | detritus | debris | plant detritus | USA | juv./adults |
| nekton | finfish | bony fish | unidentified fish | Canada | juv./adults |
| plants | other plants | terrestrial plants | vascular plants | USA | juv./adults |
| plants | phytoplankton | green algae | filamentous green algae | USA | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | unidentified crustaceans | Canada | juv./adults |
| zoobenthos | insects | insects | unidentified mayfly | USA | juv./adults |
| zoobenthos | insects | insects | unidentified nematoceran | USA | juv./adults |
| zoobenthos | insects | insects | unidentified caddis fly | USA | juv./adults |
| zoobenthos | other benth. invertebrates | n.a./other benth. invertebrates | unidentified macroinvertebrate remains | USA | juv./adults |
| zooplankton | plank. crust. | cladocerans | unidentified | USA | juv./adults |