FishBase |
Main Ref: | Watson, W. 1996 |
max | min | mod | Ref. | |
Length at birth (mm) | 4.6 | |||
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | California Current region | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | ||||
Other melanophores on tail | ||||
Pigmentation: internally along notochord at last 2-6 myomeres. |
Striking feature | light organs | |||
Striking shape lateral | hatchet-like | dorsal | tadpole-like | |
Striking feature | light organs | |||
Shape of gut | elongated | |||
Gas bladder early | late | |||
Spinal armature early | late | |||
Pigmentation early | ||||
Rows on tail | lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | no melanophores on head or trunk | |||
Pigmentation late | ||||
Rows on tail | lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | no melanophores on head or trunk | |||
Urostyle region early | pigmented | late | pigmented | |
Pectorals | normal without melanophores | |||
Pelvics | fin rays only without melanophores | |||
Upper preopercular spine bent downward whereas same spine in A. sladeni is pointed slightly upward; specimens described to 15 mm SL appear to lack pigment on postanal body, specifically in the peduncle area; presence of frontal crest; internal pigment at last 2-6 myomeres; relatively long preanal length and very narrow eye with conical choroid tissue. Pigmentation: Yolk-sac - postflexion: internally along notochord at last 2-6 myomeres. Transformation: over gas bladder; around stomach; on frontals between eyes; over midbrain and hindbrain by about 9 mm; subsequently increasing on opercular area, along supracleithrum/posttemporal region, and on gut area; internal caudal peduncle pigment condenses. Sequence of fin development: caudal, anal, pectorals, dorsal, pelvics. |
max | min | mod | Ref. | |
Total number of myomeres | 37 | 35 | 35838 | |
Preanal number of myomeres | 18 | 9 | 35838 |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | Jan | Feb | Mar | Apr | ||
min | May | Jun | Jul | Aug | ||
mod | Sep | Oct | Nov | Dec |
Water parameters Metric characters |
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