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Larvae Information Summary for  Argyrosomus japonicus
( not available )

Main Ref: Neira, F.J., A.G. Miskiewicz and T. Trnski 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 2.3 2.2    
Preanal L. % TL 62 40    
Place of development planktonic
Larval area Southwestern Pacific (Lake Macquarie, coastal waters off Sydney, and Botany Bay (NSW)); Northwestern Pacific (Japan)
Yolk-sac       Ref:  
Yolk   Oil globules  
Post larvae
Striking feature none
Striking shape lateral   dorsal  
Striking feature none
Shape of gut triangular
Gas bladder   early   late  
Spinal armature   early several different spines late several different spines
5-7 posterior preopercular spines and 1 posttemporal spine in postflexion larvae; posterior end of anal fin 3-5 myomeres ahead of posterior end of dorsal fin; 1 melanophore on dentary, about midway between tip and angle of lower jaw; 1 melanophore on nape; 6-8 melanophores along ventral midline of tail in preflexion larvae, melanophore between myomeres 16-20 enlarged. Sequence of fin formation: caudal (3.5-5.5 mm); anal (3.7-7.0 mm); dorsal (3.7-7.7 mm); pectoral (5.4-9.2 mm); pelvic (5.7-8.0 mm). Larvae settle on the bottom at about 12.0 mm BL.
Meristic characters
  max min mod Ref.
Total number of myomeres 26 25   33616
Preanal number of myomeres 11 8   33616
  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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