FishBase
Larvae Information Summary for  Lampanyctus acanthurus
( not available )

Main Ref: Moser, H.G. and E.H. Ahlstrom 1996
Yolk-sac larvae
  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  
Post larvae
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.
Meristic characters
  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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