| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| plants | other plants | benthic algae/weeds | unidentified | USA | adults |
| plants | phytoplankton | diatoms | unidentified | USA | adults |
| plants | phytoplankton | dinoflagellates | unidentified | USA | adults |
| zoobenthos | benth. crust. | amphipods | unidentified amphipods | Canada | adults |
| zoobenthos | benth. crust. | benth. copepods | unidentified copepods | Canada | adults |
| zoobenthos | insects | insects | Chaoborus sp. | Canada | adults |
| zoobenthos | insects | insects | unidentified chironomids | Canada | adults |
| zoobenthos | insects | insects | unidentified Diptera | Canada | adults |
| zoobenthos | insects | insects | unidentified Diptera | Canada | adults |
| zoobenthos | mollusks | n.a./other mollusks | unidentified mollusks | USA | juv./adults |
| zoobenthos | sponges/tunicates | sponges | unspecified sponges (spicules) | Canada | adults |
| zooplankton | fish (early stages) | fish eggs/larvae | unidentified cyprinids | Canada | adults |
| zooplankton | other plank. invertebrates | n.a./other plank. invertebrates | Broyozoan statoblasts | Canada | adults |
| zooplankton | other plank. invertebrates | n.a./other plank. Invertebrates | unidentified | USA | adults |
| zooplankton | plank. crust. | cladocerans | unidentified cladocerans | Canada | adults |