Main Ref: | Russell, F.S. 1976 |
min | max | mod | Ref. | |
Length at birth (mm) | 2 | 2.08 | 2 | |
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | to be filled | |||
Yolk-sac | elongated pigmented | Ref: | ||
Yolk | segmented | Oil globules | no oil globule | |
Rows on tail | no rows | |||
Other melanophores on tail | one dorso-ventral cluster or band | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Two patches on the dorsal primordial fin, and patches on the ventral one and in the anal region. Anus not open, short away from the end of yolk. |
Striking feature | urostyle very elongated | |||
Striking shape lateral | normal (not striking) | dorsal | tadpole-like | |
Striking feature | urostyle very elongated | |||
Shape of gut | triangular | |||
Gas bladder early | invisible | late | invisible | |
Spinal armature early | opercular spines only | late | opercular spines only | |
Pigmentation early | ||||
Rows on tail | dorsal + lateral + ventral row | |||
Other melanophores on tail | tail partly covered with melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pigmentation late | ||||
Rows on tail | dorsal + lateral + ventral row | |||
Other melanophores on tail | tail partly covered with melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | unpigmented | late | unpigmented | |
Peritoneum | with row of melanophores | |||
Pectorals | normal with few scattered melanophores | |||
Pelvics | normal (i.e. small or absent) without melanophores | |||
At about 4 mm length a preopercular spine appears which bifurcates at about 5 mm and becomes a three-pronged appearance at about 6 mm. |
min | max | mod | Ref. | |
Total number of vertebrae | 21 | 65 |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | Jan | Feb | Mar | Apr | ||
min | May | Jun | Jul | Aug | ||
mod | 2.3 | Sep | Oct | Nov | Dec |
Water parameters Metric characters |