Main Ref: | Billard, R., 1997 | |||||||||||
Data Ref.: | ||||||||||||
Country: | France | |||||||||||
Spawning ground: | ||||||||||||
Locality: | France | |||||||||||
Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
111 | 111 | 111 | 111 | 111 | ||||||||
Sex ratio: | % Ref.: | |||||||||||
Temperature: | 15 - 25 °C | |||||||||||
Gestation period: | month/s | |||||||||||
Length of offspring: | cm | |||||||||||
Batch spawners | ||||||||||||
Daily spawning frequency |
- Mean: |
|||||||||||
Min Ref.: Max Ref.: Mean Ref.: |
||||||||||||
Comments: | Eggs measure 1.4-1.5 mm (Ref. 2196). Eggs are deposited in a depression on the bottom. The males actively protect the embryonic eggs and alevins. During this period, the male is very aggressive and eats little (Ref. 30578). At a temperature of 17°C, incubation takes 5-6 days. The alevins measure 2.3 mm at hatching (Ref. 2196). |