Larvae Information Summary for  Siganus fuscescens
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Main Ref: Woodland, D.J. 1990
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area Northwestern Pacific (Japan)
Yolk-sac       Ref:  
Yolk   Oil globules  
Newly hatched larvae averaged 2.1 mm in length; have a neutral buoyancy at 32.2 ppt salinity & swarm actively towards the surface; begin to feed 3 days after hatching (diet include phyto- & zoo- plankton). Metamorphosis to juvenile depend on nutritional status, occurs when larvae is 20-24 mm SL.
Post larvae
Striking feature some dorsal fin rays very elongated
Striking shape lateral normal (not striking) dorsal  
Striking feature some dorsal fin rays very elongated
Shape of gut triangular
Gas bladder   early   late  
Spinal armature   early   late  
Peritoneum with row of melanophores
Pectorals normal  
Pelvics with elongated fin rays  
  L 1st feeding Ref. Months of presence of larvae    Ref. 
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Capuli,Estelita Emily - 21.10.91
Modified by: Luna,Susan M. - 09.04.03
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