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Larvae Information Summary for  Capros aper
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Main Ref: Russell, F.S. 1976
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 2.46 2.02 2.2  
Preanal L. % TL 56.9      
Place of development planktonic
Larval area Northeast Atlantic
Yolk-sac elongated     Ref: 37
Yolk segmented Oil globules one oil globuleposteriorventral
Rows on tail dorsal + ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Melanophores appear later on the ventral surface of the yolk sac. Anus separated by some distance from the posterior margin of the yolk sac.
Post larvae
Striking feature other
Striking shape lateral rhomboid dorsal other
Striking feature other
Shape of gut triangular
Gas bladder   early invisible late invisible
Spinal armature   early several different spines late several different spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum covered with melanophores
Pectorals normal without melanophores
Pelvics normal (i.e. small or absent) with melanophores
Characteristic rhomboid shape of body. Small spines all over the body, and a spiny crest on the head.
Meristic characters
  max min mod Ref.
Total number of vertebrae     23 65
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 2.9   Sep Oct Nov Dec
Water parameters     Metric characters
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