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Larvae Information Summary for
Nemichthys scolopaceus
| Main Ref: | Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter 1989 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | ||||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | California Current region; Japan | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | no rows | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on trunk | |||
| Three prominent spots laterally below midline (lower on body than on Avocettina infans (Ref. 265). | ||||
Post larvae
| Striking feature | teeth clearly visible | |||
| Striking shape lateral | eel-like | dorsal | compressed | |
| Striking feature | teeth clearly visible | |||
| Shape of gut | tube-like | |||
| Gas bladder early | late | |||
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on trunk | |||
| Rows on tail | no rows | |||
| Peritoneum | without melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| Leptocephalus larva; elongate with filiform tail; distinguished from A. infans by position of liver (myomere 40) and last vertical blood vessel (80-100th myomere) (Ref. 265). Nephros at about myomere 85 (81-88); maximum body length at about 260 mm (Ref. 32364). Pigmentation: dorsally on notochord; four clusters (1-5 dots each) below lateral midline at myomeres 18-23, 35-44, 69-81, and 103-123; dorsally on gut; dorsal and analfin bases; larvae >120.8 mm have ventral patch posterior to heart (Ref. 32364). Sequence of fin development: dorsal and anal (late) and caudal, pectoral. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 354 | 230 | 305 | 32364 |
| 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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