| FishBase |
| Main Ref: | Olivar, M.P., H.G. Moser and L.E. Beckley 1999 | |||
| max | min | mod | Ref. | |
| Length at birth (mm) | ||||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | Southwestern Indian Ocean (Agulhas Current Region); Northwestern Pacific (Japan) | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head | |||
| Striking feature | light organs | |||
| Striking shape lateral | normal (not striking) | dorsal | tadpole-like | |
| Striking feature | light organs | |||
| Shape of gut | elongated | |||
| Gas bladder early | late | |||
| Spinal armature early | late | |||
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head | |||
| Pigmentation late | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head | |||
| Urostyle region early | unpigmented | late | unpigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| Body relatively slender (body depth at pectoral <20% BL in preflexion and flexion larvae); eyes slightly ovate. Pigmentation: Blotch in ventral midline anterior to the cleithral symphysis; one stellate melanophore on the lateral wall of the gut midway between the anus and the cleithral symphysis, and another one one the free terminal section of the gut; in larvae <4 mm, three or four postanal melanophores on the ventral midline of the body, later coalescing to one; embedded in the otic region; in some larvae >7.5 mm BL one melanophore is present on the ventral margin of the caudal peduncle. Photophore development: dorsonasal photophore appears at 5-6 mm; pectoral photophores at 6 mm. | ||||
| 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 | ||
| Similar species 1 | 10238Benthosemapterotum |
| Remarks | |
| No pigmentation present on the tip of the lower jaw and snout in B. fibulatum, but present in B. pterotum. Melanophores large and often stellate in B. fibulatum and small and inconspicuous in B. pterotum. In B. pterotum, postanal melanophore on the ventral midline of the body disappears in larvae > 6 mm, but is still present in transforming larvae of B. fibulatum. Body slightly more slender in B. pterotum than in B. fibulatum. Photophores larger in B. fibulatum. Order of photophore development differs between the two species. Br2, Dn and PO5 appear earlier in B. fibulatum than in B. pterotum, followed by PVO1 and OP2 in B. pterotum and PO1 and AOa1 in B. fibulatum. | |
| Water parameters Metric characters |
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