| Main Ref. | National Register of Lake Surveys, 2006 (Ref. 57534) |
|---|---|
| Name used | Gymnocephalus cernuus |
| Locality | Lake GRECKEN |
| Station | FRI-661239-143394-19780606 |
| Year | 1978 |
| Water depth | 60 m |
| Altitude | 177 m |
| Coordinates | In decimal: 59.63, 14.64 |
| Collector | FINMND18 |
| Identifier | FINMND18 |