| Main Ref. | Kangur, K., A. Kangur and P. Kangur, 1999 | ||
| Predator stage | juv./adults | ||
| Food I | plants | ||
| Food II | other plants | ||
| Food III | terrestrial plants | ||
| Food group | unidentified | Prey Stage/Part | n.a./others |
| Food name | unidentified plants | ||
| Commonness | 13 | common (6-20%) | |
| Country | Estonia | ||
| Remark | No. of fish examined: 56. Fish size: 15-51 cm. Locality: Lake Vortsjarv. | ||