| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| detritus | detritus | debris | unidentified | USA | juv./adults |
| plants | other plants | benthic algae/weeds | Oedogonium sp. | Canada | juv./adults |
| plants | phytoplankton | diatoms | Diatoma sp. | Canada | juv./adults |
| plants | phytoplankton | diatoms | Fragilaria sp. | Canada | juv./adults |
| plants | phytoplankton | diatoms | Stephanodiscus sp. | Canada | juv./adults |
| plants | phytoplankton | green algae | Ulothrix sp. | Canada | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | unidentified crustaceans | USA | juv./adults |
| zoobenthos | insects | insects | unidentified | USA | juv./adults |
| zoobenthos | worms | n.a./other annelids | unidentified annelids | USA | juv./adults |