Main Ref: |
min | max | mod | Ref. | |
Length at birth (mm) | 4.2 | 4.6 | ||
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | fresh waters of Africa | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | more than one oil globule | ||
Eggs hatch on the third day after deposition. Float at the surface Ref. 94267). |
Striking feature | ||||
Striking shape lateral | dorsal | |||
Striking feature | ||||
Shape of gut | ||||
Gas bladder early | late | |||
Spinal armature early | late | |||
Larvae possess paired, epithelially covered bony projections on the lower jaw, function of which is unknown. Body coloration consists of an upper light and a lower black zigzag band along the body which camouflages the larva at the water surface (Ref. 94267). |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | Jan | Feb | Mar | Apr | ||
min | May | Jun | Jul | Aug | ||
mod | Sep | Oct | Nov | Dec |
Water parameters Metric characters |