| Main Ref. | National Register of Lake Surveys, 2006 (Ref. 57534) |
|---|---|
| Name used | Gymnocephalus cernuus |
| Locality | Lake LYSTJÄRN |
| Station | FRI-657176-130126-19940804 |
| Year | 1994 |
| Water depth | 22 m |
| Altitude | 116 m |
| Coordinates | In decimal: 59.22, 12.33 |
| Collector | KN1765 |
| Identifier | KN1765 |