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Main Ref: | Kottelat, M. and J. Freyhof, 2007 | |||||||||||
Data Ref.: | ||||||||||||
Country: | ||||||||||||
Spawning ground: | ||||||||||||
Locality: | Central Europe | |||||||||||
Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
111 | 111 | 111 | 111 | 111 | ||||||||
Sex ratio: | % Ref.: | |||||||||||
Temperature: | - 6 °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: | Spawns at night, in groups of up to 20 interlaced individuals forming a ball about 60cm in diameter constantly moving and rolling on the bottom, releasing eggs and sperm (Ref.59043). | |||||||||||
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