FishBase |
Main Ref: | Russell, F.S. 1976 |
max | min | mod | Ref. | |
Length at birth (mm) | 3.7 | 2.55 | 3 | |
Preanal L. % TL | 85 | 80 | 84 | 37 |
Place of development | planktonic | |||
Larval area | to be filled | |||
Yolk-sac | ovoid unpigmented | Ref: | ||
Yolk | segmented | Oil globules | no oil globule | |
Rows on tail | no rows | |||
Other melanophores on tail | tail with single melanophore | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Scattered small melanophores on the head and dorsal region. |
Striking feature | none | |||
Striking shape lateral | normal (not striking) | dorsal | normal (not striking) | |
Striking feature | none | |||
Shape of gut | tube-like | |||
Gas bladder early | invisible | late | invisible | |
Spinal armature early | no spines | late | no spines | |
Pigmentation early | ||||
Rows on tail | ventral row | |||
Other melanophores on tail | tail with single melanophore | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pigmentation late | ||||
Rows on tail | ventral row | |||
Other melanophores on tail | tail with single melanophore | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | pigmented | late | pigmented | |
Peritoneum | with row of melanophores | |||
Pectorals | normal without melanophores | |||
Pelvics | normal (i.e. small or absent) | |||
At 10-11 mm: dorsal originates on 28th myomere (in pilchard on myomere 31). At 15-16 mm: caudal not yet emarginate ( in pilchard emarginate). At 18 mm: pelvic fins behind pylorous (in pilchard at level of pylorous). |
max | min | mod | Ref. | |
Total number of myomeres | 48 | 46 | 47 | 257 |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | 6 | 37 | Jan | Feb | Mar | Apr |
min | 4.5 | 37 | May | Jun | Jul | Aug |
mod | 5 | 37 | Sep | Oct | Nov | Dec |
Water parameters Metric characters |
Back to Search |