FishBase |
Main Ref: | Watson, W. 1996 |
max | min | mod | Ref. | |
Length at birth (mm) | ||||
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | California Current region | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | no rows | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | no melanophores on head or trunk |
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 | no rows | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | no melanophores on head or trunk | |||
Pigmentation late | ||||
Rows on tail | no rows | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | no melanophores on head or trunk | |||
Urostyle region early | unpigmented | late | unpigmented | |
Pectorals | normal without melanophores | |||
Pelvics | fin rays only without melanophores | |||
Upper preopercular spine is developed pointed slightly upward and short frontal crests are present; distinguished from A. affinis and A. hemygymnus by combination of nine dorsal spines and SAB, PAN, AN, and SC photophores not in continuous line; no internal pigment in tail; pair of large melanophores anteriorly over midbrain in transformation stage; narrow choroid tissue mass below eye; short preanal length. Pigmentation: Preflexion-postflexion: none. Transformation: none before SC photophores form; by about 9.2-9.5 mm (white SC photophores present at this size) on frontal region adjacent to eye, anteriorly on each side of midbrain, along lower posttemporal/upper supracleithrum region, over gas bladder, around stomach; subsequently increases over gut area, laterally above gut, on opercular area, and over brain. nitially, appears anteriorly on body in patches and, with development, increases posteriorly; spot on peduncle does not appear as early as A. affinis, first appearing as a patch in larvae >13 mm SL. Sequence of fin development: caudal, pectorals, anal, dorsal and pelvics. |
max | min | mod | Ref. | |
Total number of myomeres | 12 | 11 | 35838 | |
Preanal number of myomeres | 37 | 35 | 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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