| Food I | Food II | Food III | Food name | Land | Predator Stage |
|---|---|---|---|---|---|
| nekton | finfish | bony fish | unspecified small finfishes | Canada | ungfisk / adulter |
| others | other terrest. invertebrates | n.a./terrest. Insects | unspecified terrestial insects | Canada | ungfisk / adulter |
| zoobenthos | insects | insects | unspecified aquatic insects | Canada | ungfisk / adulter |
| zoobenthos | other benth. invertebrates | n.a./other benth. invertebrates | unspecified large invertebrates | Canada | ungfisk / adulter |