Ruffe
Gymnocephalus cernua
Identification image; not photographed at Lake Svitiaz.
Photo «Gymnocephalus cernuus Pärnu River Estonia 2010-01-06.jpg» — Tiit HuntCC BY-SA 3.0cropped
Distribution
Documented lakes
8 lakes in the guide
Characteristics
Species facts
A small spiny bottom fish that sees well and finds food in low light. The ruffe was absent from the first known species list for Lake Svitiaz in 1911, yet present-day researchers call it a typical species of the lake.
- 0.4 kg
- Maximum weight
- 25 cm
- Maximum length
- 10 years
- Lifespan
Origin in Lake Svitiaz: native species. IUCN: LC.