FishBase |
Main Ref: | Moser, H.G. and E.H. Ahlstrom 1996 |
max | min | mod | Ref. | |
Length at birth (mm) | 2.5 | |||
Preanal L. % TL | 60 | 40 |
Place of development | planktonic | |||
Larval area | California Current region | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | ||||
Other melanophores on tail |
Striking feature | light organs | |||
Striking shape lateral | normal (not striking) | dorsal | ||
Striking feature | light organs | |||
Shape of gut | spherical or gut loop | |||
Gas bladder early | pigmented | late | ||
Spinal armature early | no spines | late | no 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 | no rows | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | pigmented | late | pigmented | |
Pectorals | normal melanophores at fin base | |||
Pelvics | fin rays only without melanophores | |||
Large, deep head with large jaws, armed with strong, curved teeth; largest teeth at jaw tips; large round eyes; body tapered and compressed initially, becoming somewhat robust in postflexion stage; gut short and sharply sigmoid initially; pigment sparse but diagnostic; Br2 photophores form at about 7.0 mm. Pigmentation: Preflexion: 1 on dorsal surface of terminal gut section in smallest larvae; by 3.5 mm, 1 above developing gas bladder and 1 at tip of lower jaw; by 4.5 mm, most specimens have 1 in middle above cerebellum, 1 anterior to adipose region, and 1 at upper jaw tip. Flexion-postflexion: as above; most larvae >8.0 mm have 1 embedded at cleithrum near upper edge of pectoral fin base; anterior trunk myosepta outlined by about 16.0 mm. Sequence of fin development: caudal, dorsal and anal and pelvics, pectorals. |
max | min | mod | Ref. | |
Total number of vertebrae | 37 | 35 | 31442 |
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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