| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| plants | other plants | benthic algae/weeds | Cladophora 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 | Oedogonium sp. | Canada | juv./adults |
| plants | phytoplankton | green algae | Ulothrix sp. | Canada | juv./adults |
| zoobenthos | benth. crust. | amphipods | unidentified amphipods | Canada | juv./adults |
| zoobenthos | insects | insects | unidentified insects | Canada | juv./adults |
| zooplankton | plank. crust. | cladocerans | unidentified cladocerans | Canada | juv./adults |
| zooplankton | plank. crust. | plank. copepods | unidentified copepods | Canada | juv./adults |