| Main Ref. | Nilsson, N.-A., 1957 | ||
| Fish stage | adults | Mean length | NG |
| Sample size | 14 | Percent empty | 7.1 |
| Country | Sweden | Locality | River Rensjön, Station 5. 1955 |
| Period |
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| Diet percent | Food I | Food II | Food III | Prey stage | Item Name | Comments |
|---|---|---|---|---|---|---|
| 5.80 % | zoobenthos | benth. crust. | benth. copepods | juv./adults | Copepoda | Copepoda |
| 1.40 % | zoobenthos | mollusks | gastropods | juv./adults | Planorbis | Planorbis |
| 80.10 % | zoobenthos | insects | insects | adults | Trichoptera | Trichoptera (46.2), Ephemeroptera (8.5), Plecoptera (11.2), Chironomidae (5.3), Simuliidae (2.7), terrestrial insects (6.2) |
| 12.70 % | zoobenthos | insects | insects | larvae | Trichoptera | Trichoptera (5.4), Plecoptera (1.5), Sialis (2.3), Simuliidae (3.5) |