| Main Ref: | Maitland, P.S. and R.N. Campbell, 1992 | |||||||||||
| Data Ref.: | Pinder, A.C., 2001 | |||||||||||
| Country: | UK | |||||||||||
| Spawning ground: | riverine | |||||||||||
| Locality: | Not stated | |||||||||||
| Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 111 | 111 | |||||||||||
| Sex ratio: | % Ref.: | |||||||||||
| Temperature: | 11 - °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 when water temperature rises above 10°C. Spawning occurs over stones or vegetation, in shallow but flowing water. It lasts for several days then the parents gather in schools and migrate downstream (Ref. 30578). | |||||||||||