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Larvae Information Summary for  Trachipterus trachypterus
( not available )

Main Ref: Bertolini, F., U. D'Ancona, E. Padoa Montalenti, S. Ranzi, L. Sanzo, A. Sparta, E. Tortonese and M. Vialli 1956
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     10  
Preanal L. % TL     50  
Place of development planktonic
Larval area Northwestern Pacific (Japan)
Yolk-sac       Ref:  
Yolk segmented Oil globules no oil globule
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Laterally compressed body; stocky very high head; large protractile mouth.
Post larvae
Striking feature some dorsal fin rays very elongated
Striking shape lateral other dorsal compressed
Striking feature some dorsal fin rays very elongated
Shape of gut elongated
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum with row of melanophores
Pectorals normal  
Pelvics with elongated fin rays with melanophores
Branched black chromatophores along the dorsal profile of the abdominal trunk. First five dorsal rays very elongated, the first one exceeding the body length. Pelvics also have three long rays exceeding the body length. In the dorsal fin, approximately fifty rays may be counted.
Meristic characters
  max min mod Ref.
Total number of myomeres     90  
Preanal number of myomeres     52  
  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: Papasissi,Christine - 29.10.90
Modified by: Luna,Susan M. - 17.03.03
Checked by: Giovanardi,Otello - 19.02.91
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