FishBase
Larvae Information Summary for  Exocoetus volitans
( not available )

Main Ref: Watson, W. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 4 3.5    
Preanal L. % TL        
Place of development planktonic
Larval area Northeastern Pacific (California Current region); Northwestern Pacific (Japan)
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Post larvae
Striking feature other
Striking shape lateral normal (not striking) dorsal  
Striking feature other
Shape of gut  
Gas bladder   early   late  
Spinal armature   early   late  
Pigmentation early
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Pectorals strikingly large with marginal melanophores
Pelvics normal (i.e. small or absent) without melanophores
Pelvic fin origin far forward, midway between pectoral fins and anal fin or nearer the pectoral fins; pectoral fins much longer than pelvic fins after about 7 mm; anal fin origin under 1st-3rd dorsal fin ray (usually second dorsal or third); barbels or beak never form; prominent pigment blotch distally on upper pectoral fins after about 8 mm; prominent bar across tail at level of last half of dorsal and anal fins after about 12 mm; more upper gill rakers (7-8) than E. monocirrhus (4-6). Notochord flexion occurs before hatching. Pigmentation: Larvae: on upper half of head except little or none on snout before about 8.4 mm; covering trunk and gut except none ventrally on gut until 8-10.5 mm; on dorsal and ventral margins and lateral midline of tail to middle of caudal peduncle, extending to last 12 myomeres by 7 mm; dorso- and ventrolaterally on anterior 60% of tail, extending to end by 8 mm; bar at level of last half of dorsal and anal fin after 12 mm; blotch forms on distal 30-40% of upper pectoral fin (rays 1-2 to 5-7) after 8 mm; caudal fin pigment principally along lower rays, forms after 16 mm; dorsal, anal and pelvic fins usually unpigmented. Juvenile: heavy pigment on upper part of head and trunk; bar at midtail may extend onto dorsal and anal fins; distal blotch on upper part of pectoral fins; proximal blotch on middle of pelvic fins.
Meristic characters
  max min mod Ref.
Total number of vertebrae 46 43   36606
  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
Entered by: Luna,Susan M. - 16.11.00
Modified by: Luna,Susan M. - 19.02.03
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