| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| detritus | detritus | debris | Unspecified vascular detritus | UK | juv./adults |
| detritus | detritus | debris | sand grains | UK | juv./adults |
| nekton | finfish | bony fish | Unspecified fish | UK | juv./adults |
| others | other terrest. Invertebrates | n.a./terrest. insects | Unspecified Odonata | UK | juv./adults |
| others | others | n.a./others | Unspecified Chironomidae | UK | juv./adults |
| others | others | n.a./others | Unspecified Coleoptera | UK | juv./adults |
| others | others | n.a./others | Unspecified Diptera | UK | juv./adults |
| others | others | n.a./others | Unspecified Ephemeroptera | UK | juv./adults |
| others | others | n.a./others | Unspecified Plecoptera | UK | juv./adults |
| others | others | n.a./others | Unspecified Thysanoptera | UK | juv./adults |
| others | others | n.a./others | Unspecified Trichoptera | UK | juv./adults |
| plants | other plants | benthic algae/weeds | Unspecified Cladophora | UK | juv./adults |
| zoobenthos | benth. crust. | amphipods | Unspecified Gammarus | UK | juv./adults |
| zoobenthos | benth. crust. | isopods | Unspecified Asellus | UK | juv./adults |
| zoobenthos | mollusks | n.a./other mollusks | Unspecified molluscs | UK | juv./adults |
| zoobenthos | worms | n.a./other annelids | Unspecified Oligochaeta | UK | juv./adults |