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Larvae Information Summary for  Hippocampus hippocampus
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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)     9.3 52034
Preanal L. % TL        
Place of development in close association with substrate
Larval area eelgrass bedds in inshore waters
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature  
Striking shape lateral other dorsal  
Striking feature  
Shape of gut tube-like
Gas bladder   early   late  
Spinal armature   early several different spines late several different spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail more than two dorso-ventral clusters or bands
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
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)  
Some prominent rings. 3 preanal stripes, 1 in the middle of the dorsal and 5-6 postanal ones. No primordial fin, no caudal fin, 16-17 dorsal rays extending over 3 segments, 4 anal and 13-15 pectoral rays.
Meristic characters
  max min mod Ref.
Total number of myomeres 46 45 46  
Preanal number of myomeres     11  
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 8   Sep Oct Nov Dec
Water parameters     Metric characters
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