FishBase |
Main Ref: | Russell, F.S. 1976 |
max | min | mod | Ref. | |
Length at birth (mm) | 2.46 | 2.02 | 2.2 | |
Preanal L. % TL | 56.9 |
Place of development | planktonic | |||
Larval area | Northeast Atlantic | |||
Yolk-sac | elongated | Ref: | 37 | |
Yolk | segmented | Oil globules | one oil globuleposteriorventral | |
Rows on tail | dorsal + ventral row | |||
Other melanophores on tail | tail with single melanophore | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Melanophores appear later on the ventral surface of the yolk sac. Anus separated by some distance from the posterior margin of the yolk sac. |
Striking feature | other | |||
Striking shape lateral | rhomboid | dorsal | other | |
Striking feature | other | |||
Shape of gut | triangular | |||
Gas bladder early | invisible | late | invisible | |
Spinal armature early | several different spines | late | several different spines | |
Pigmentation early | ||||
Rows on tail | no rows | |||
Other melanophores on tail | tail partly covered with melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pigmentation late | ||||
Rows on tail | no rows | |||
Other melanophores on tail | tail partly covered with melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | unpigmented | late | unpigmented | |
Peritoneum | covered with melanophores | |||
Pectorals | normal without melanophores | |||
Pelvics | normal (i.e. small or absent) with melanophores | |||
Characteristic rhomboid shape of body. Small spines all over the body, and a spiny crest on the head. |
max | min | mod | Ref. | |
Total number of vertebrae | 23 | 65 |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | Jan | Feb | Mar | Apr | ||
min | May | Jun | Jul | Aug | ||
mod | 2.9 | Sep | Oct | Nov | Dec |
Water parameters Metric characters |
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