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Larvae Information Summary for  Carapus acus
( 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)     2.5  
Preanal L. % TL     40.2  
Place of development planktonic
Larval area Eastern Atlantic
Yolk-sac ovoid   pigmented Ref:  
Yolk unsegmented Oil globules one oil globuleanteriorcentralpigmented
Rows on tail ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
There is a small appendage on the dorsal trunk. Abundant pigments on the head and the trunk. The caudal region pigmented.
Post larvae
Striking feature some dorsal fin rays very elongated
Striking shape lateral eel-like dorsal normal (not striking)
Striking feature some dorsal fin rays very elongated
Shape of gut spherical or gut loop
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail dorsal + ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail dorsal + ventral row
Other melanophores on tail more than two dorso-ventral clusters or bands
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum covered with melanophores
Pectorals normal  
Pelvics normal (i.e. small or absent)  
A dorsal appendage (vexillum) is developed and at 4 mm it is longer than the trunk.
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 3.8   Sep Oct Nov Dec
Water parameters     Metric characters
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