| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| others | others | n.a./others | digested animal matters | USA | juv./adults |
| plants | other plants | benthic algae/weeds | Cladophora sp. | Canada | juv./adults |
| plants | phytoplankton | diatoms | diatoms | USA | juv./adults |
| plants | phytoplankton | diatoms | Diatoma sp. | Canada | juv./adults |
| plants | phytoplankton | diatoms | Fragilaria sp. | Canada | juv./adults |
| plants | phytoplankton | green algae | desmids | USA | juv./adults |
| plants | phytoplankton | green algae | filamentous algae | USA | juv./adults |
| plants | phytoplankton | green algae | Oedogonium sp. | Canada | juv./adults |
| zoobenthos | benth. crust. | benth. copepods | unidentified copepods | USA | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | unidentified crustaceans | Canada | juv./adults |
| zoobenthos | benth. crust. | ostracods | unidentified ostracods | Canada | juv./adults |
| zoobenthos | insects | insects | midges | Canada | juv./adults |
| zoobenthos | insects | insects | unidentified beetles | USA | juv./adults |
| zoobenthos | insects | insects | unidentified flies | USA | juv./adults |
| zoobenthos | insects | insects | unidentified true bugs | USA | juv./adults |
| zoobenthos | insects | insects | unidentified hymenopterans | USA | juv./adults |
| zooplankton | plank. crust. | cladocerans | unidentified cladocerans | USA | juv./adults |