FishBase |
Main Ref: | Ambrose, D.A. 1996 |
max | min | mod | Ref. | |
Length at birth (mm) | 3 | |||
Preanal L. % TL | 59 | 20 |
Place of development | planktonic | |||
Larval area | California Current region | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | ||||
Other melanophores on tail |
Striking feature | duck-billed shape of head | |||
Striking shape lateral | normal (not striking) | dorsal | ||
Striking feature | duck-billed shape of head | |||
Shape of gut | elongated | |||
Gas bladder early | absent | late | absent | |
Spinal armature early | no spines | late | no spines | |
Pigmentation early | ||||
Rows on tail | lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pigmentation late | ||||
Rows on tail | lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | unpigmented | late | unpigmented | |
Peritoneum | with row of melanophores | |||
Pectorals | normal with few scattered melanophores | |||
Pelvics | fin rays only without melanophores | |||
In preflexion-flexion larvae, pigment on lip and angle of lower jaw, internal pigment behind eye absent, 2 pigment patches on dorsal body margin; in postflexion larvae, 3 pigment patches on dorsal body margin; in transformation-juvenile specimens, 7 peritoneal pigment patches, 41-45 precaudal vertebrae, and anus well anterior to a vertical through the dorsal fin origin. Pigmentation: Preflexion: tip of jaw, two dorsal and one ventral midline spot; peritoneal patches increase during development to about seven. Flexion: on fore- and midbrain; 3 patches on dorsal body margin and 2 rows in the lateral caudal peduncle region; by about 20 mm, 2 patches on ventral body margin and 6 peritoneal patches. Postflexion: on anterior rays of anal fin and dorsal fin; crescent-shaped row on infraorbital region. Transformation-juvenile: rows on upper and lower jaws; on caudal fin and pectoral fin rays; scattered on dorsal body; 7 peritoneal patches. Sequence of fin development: caudal, anal, dorsal, pectorals, pelvics, adipose. |
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 |
Back to Search |