| Main Ref. | National Register of Lake Surveys, 2006 (Ref. 57534) |
|---|---|
| Name used | Gymnocephalus cernuus |
| Locality | Lake KROKSJÖN |
| Station | FRI-660801-128394-19930909 |
| Year | 1993 |
| Water depth | 15 m |
| Altitude | 142 m |
| Coordinates | In decimal: 59.54, 11.99 |
| Collector | Samhall |
| Identifier | Samhall |