| Main Ref. | National Register of Lake Surveys, 2006 (Ref. 57534) |
|---|---|
| Name used | Gymnocephalus cernuus |
| Locality | Lake YTTERN |
| Station | FRI-633114-135811-19800706 |
| Year | 1980 |
| Water depth | 6 m |
| Altitude | 171 m |
| Coordinates | In decimal: 57.08, 13.47 |
| Collector | FINMND13 |
| Identifier | FINMND13 |