| Main Ref. | Kangur, K., A. Kangur and P. Kangur, 1999 | ||
| Predator stage | juv./adults | ||
| Food I | zoobenthos | ||
| Food II | insects | ||
| Food III | insects | ||
| Food group | Diptera | Prey Stage/Part | pupae |
| Food name | Microchironomus tener | ||
| Commonness | 1 | rare (1-5%) | |
| Country | Estonia | ||
| Remark | No. of fish examined: 88. Fish size: 30-83 cm. Prey stage: IV instar. Locality: Lake Vortsjarv. | ||