Larvae Information Summary for  Callionymus sagitta
( not available )

Main Ref: Jeyaseelan, M.J.P. 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area Indo-West Pacific
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature other
Striking shape lateral other dorsal tadpole-like
Striking feature other
Shape of gut  
Gas bladder   early   late  
Spinal armature   early no spines late opercular spines only
Pigmentation early
Rows on tail ventral row
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 tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum with row of melanophores
Pectorals normal  
Pelvics normal (i.e. small or absent)  
Pectoral fin enlarged. No crest on the nape. At 3 mm, lower lobe of the caudal fin is irregularly shaped. Body is laterally compressed at this stage. At 9 mm, body is dorsoventrally flattened and at times cylindrical. Head is prominently depressed dorsoventrally. Caudal fin almost oval in shape. First dorsal fin has 4 spines, second dorsal fin has 9-10 rays. Preoperculum process comprised with a forward-directed spine and a posteriorly-directed spine with 4 lateral processes are visible. Pigmentation: At 3 mm, pigmentation prominent along the mid-lateral line from the post-orbital region also ventrally. A pigmented band present along the ventral portion of the operculum up to the posterior tip of the pectoral fin and borders the ventral side of the myomeres. At 9 mm, the dorsal region of the body has 4-5 bands of pigments.
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Luna,Susan M. - 28.11.02
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