| Food I | Food II | Food III | Food name | Land | Predator Stage |
|---|---|---|---|---|---|
| plants | phytoplankton | blue-green algae | unspecified blue-green algae | Canada | juv./adults |
| plants | phytoplankton | diatoms | unspecified diatoms | Canada | juv./adults |
| plants | phytoplankton | green algae | unspecified desmids | Canada | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | unspecified crustaceans | Canada | juv./adults |
| zoobenthos | insects | insects | unspecified Chironomidae larvae /nymphs | Canada | juv./adults |
| zoobenthos | insects | insects | unspecified Ephemeroptera larvae/nymphs | Canada | juv./adults |
| zoobenthos | insects | insects | unspecified Plecoptera larvae/nymphs | Canada | juv./adults |
| zoobenthos | insects | insects | unspecified Trichoptera larvae/nymphs | Canada | juv./adults |
| zoobenthos | worms | polychaetes | unspecified polychaetes | Canada | juv./adults |
| zooplankton | fish (early stages) | fish eggs/larvae | eggs of unspecified fishes | Canada | juv./adults |
| zooplankton | fish (early stages) | fish eggs/larvae | larvae of unspecified fishes | Canada | juv./adults |