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Larvae Information Summary for  Ctenopharyngodon idella
( not available )

Main Ref: Shireman, J.V. and C.R. Smith 1983
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 5.5 4.5 5  
Preanal L. % TL        
Place of development planktonic
Larval area to be filled
Yolk-sac elongated     Ref:  
Yolk   Oil globules  
Melanophores on head + trunk melanophores on head + trunk
The transparent eye of the newly hatched larvae has few melanophores in the lower part of the optic-cup symphisis. The newly hatched larvae has the eyes and otic vesicles for med. No eye pigmentation. Head curved over yolk-sac.
Post larvae
Striking feature none
Striking shape lateral   dorsal  
Striking feature none
Shape of gut  
Gas bladder   early visible late  
Spinal armature   early   late  
Pectorals normal  
Melanophores of the newly hatched larvae are distributed over the finfold except at the posterior part of the caudal region. Two days after hatching, mouth and anus opened. Yolk are completely absorbed by day 3. They swim against the current.
Meristic characters
  max min mod Ref.
Total number of myomeres 41 37 39 145
Preanal number of myomeres 29 23 26 145
  L 1st feeding Ref. Months of presence of larvae
max 7   Jan Feb Mar Apr
min 6   May Jun Jul Aug
mod 6.5 150 Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Luna,Susan M. - 19.10.90
Modified by: Agustin,Liza Q. - 29.04.92
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