FishBase |
Main Ref: | Watson, W. 1996 |
max | min | mod | Ref. | |
Length at birth (mm) | ||||
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | Northeastern Pacific (California Current region); Northwest Pacific (Japan) | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | ||||
Other melanophores on tail |
Striking feature | other | |||
Striking shape lateral | short and/or deep | dorsal | ||
Striking feature | other | |||
Shape of gut | triangular | |||
Gas bladder early | late | |||
Spinal armature early | several different spines | late | several different spines | |
Pigmentation early | ||||
Rows on tail | no rows | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pigmentation late | ||||
Rows on tail | ventral + lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | unpigmented | late | pigmented | |
Pectorals | normal without melanophores | |||
Pelvics | normal (i.e. small or absent) without melanophores | |||
Prominent parietal and preopercular spines that become relatively enormous from flexion through transformation stages (about 4.5-10 mm); dorsal fin rays usually 18 and anal fin rays usually 8 (full complements present by 4 mm); long preanal length; large head; deep body. for juveniles: increase in dark pigment; reduction of spines. Pigmentation: Preflexion-postflexion: light to heavy over midbrain area, becoming consistently heavy by about 4.5 mm; none to few on forebrain, becoming light to moderate by 4.6 mm; on preopercle, spreading over most of gill cover by 5.2 mm; externally over trunk myomeres, spreading onto tail, primarily ventrolaterally, after 4.6 mm; internally over notochord anteriorly, spreading caudad to level of dorsal fin insertion by 5.2 mm; heavy over upper half of gut, spreading ventrad to surround all but ventral midline by 5.2 mm; present or absent on pectoral fin base. Transformation: increasing on head, gut, trunk and tail; black patch forms on ventrum just anterior to pelvic fin bases. Sequence of fin development: dorsal and anal and pectorals, caudal, pelvics. |
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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