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Larvae Information Summary for
Scatophagus argus
| Main Ref: | Jeyaseelan, M.J.P. 1998 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 1.88 | 1.75 | ||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | Indo-Pacific | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
| Yolk sac disappears at day-4 between 2.6 and 2.8 mm TL (Ref. 102820). | ||||
Post larvae
| Striking feature | other | |||
| Striking shape lateral | normal (not striking) | dorsal | compressed | |
| Striking feature | other | |||
| Shape of gut | ||||
| Gas bladder early | late | |||
| Spinal armature early | other spines | late | other spines | |
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail partly covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| At 11-13 mm, body somewhat oval in shape and very compressed. Head is very large with bony plates. A strong shoulder spine (supra scapular spine) is present. Dorsal fin has 10-11 spines and 16-18 rays. Anal fin has 4 spines and 14-15 rays. Pectoral fin rays about 20. Caudal fin rays 16. The spinous dorsal fin is bright purple with a brownish tinge posteriorly. Pigmentation: Black chromatophores and red pigmented cell groups are present in the body. | ||||
| L 1st feeding | Ref. |
Months of presence of larvae
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| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | Sep | Oct | Nov | Dec | ||
| Water parameters Metric characters |
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