| Main Ref. | National Register of Lake Surveys, 2006 (Ref. 57534) |
|---|---|
| Name used | Gymnocephalus cernuus |
| Locality | Lake KROKSJÖN |
| Station | FRI-631763-136193-19670414 |
| Year | 1967 |
| Altitude | 148 m |
| Coordinates | In decimal: 56.96, 13.54 |
| Collector | FINMND13 |
| Identifier | FINMND13 |