| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| detritus | detritus | debris | unidentified | USA | juv./adults |
| nekton | finfish | bony fish | unidentified | USA | juv./adults |
| plants | other plants | benthic algae/weeds | macrophytes | Canada | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | unidentified Astasidae | USA | juv./adults |
| zoobenthos | benth. crust. | shrimps/prawns | unidentified Palaemonidae | USA | juv./adults |
| zoobenthos | insects | insects | unidentified coelopteran | USA | juv./adults |
| zoobenthos | insects | insects | mayflies | USA | juv./adults |
| zoobenthos | insects | insects | unidentified | USA | juv./adults |
| zoobenthos | mollusks | n.a./other mollusks | unidentified mollusks | Canada | juv./adults |
| zoobenthos | worms | n.a./other annelids | unidentified annelids | USA | juv./adults |