Main Ref: | Kottelat, M. and J. Freyhof, 2007 | |||||||||||
Data Ref.: | ||||||||||||
Country: | ||||||||||||
Spawning ground: | ||||||||||||
Locality: | Arctic Ocean basin | |||||||||||
Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
111 | 111 | |||||||||||
Sex ratio: | % Ref.: | |||||||||||
Temperature: | 1 - 2 °C | |||||||||||
Gestation period: | month/s | |||||||||||
Length of offspring: | cm | |||||||||||
Batch spawners | ||||||||||||
Daily spawning frequency |
- Mean: |
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Min Ref.: Max Ref.: Mean Ref.: |
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Comments: | Enters rivers in July - August and reaches spawning sites by October - November. In larger rivers, moves upriver up tp 2000 km (average speed 20 km/day). Spawns in rapids or shallows, at 1-2°C, when rivers start freezing. Adults leave spawning sites in winter (Ref. 59043). |