FishBase
Larvae Information Summary for  Thryssa mystax
( 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 Asia
Yolk-sac       Ref:  
Yolk segmented Oil globules no oil globule
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal  
Striking feature none
Shape of gut elongated
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail ventral row
Other melanophores on tail one dorso-ventral cluster or band
Melanophores on head + trunk melanophores on trunk
Pigmentation late
Rows on tail ventral row
Other melanophores on tail one dorso-ventral cluster or band
Melanophores on head + trunk melanophores on trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum with row of melanophores
Pectorals normal without melanophores
Pelvics normal (i.e. small or absent) without melanophores
For larvae > 18 mm: 27 pre-anal and 18 post-anal myomeres. Advanced larva has a wide and inferior mouth. Maxillary bones with minute conical teeth cross beyond the eye, but are yet to reach beyond the operculum. Pectoral fins are membranous, semi-circular and possess rays. Pelvic rays are fully formed and are seven in number. The dorsal fin with 15 rays situated behind the middle of the body move forward and reached the middle as the larva grows. The anal fin has over 35 rays and a forked caudal fin with 25 rays. Pigmentation: About 5 pigment spots are present near the foregut; 3 branching chromatophores above the mid gut and 4 at the base of the anal fin. A few pigment streaks are present at the base of the caudal lobe and also in the dorsal fin.
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Similar species 1 589Thryssahamiltonii
Remarks
Pre-anal myomere count is 30.
Water parameters     Metric characters
Entered by: Luna,Susan M. - 21.08.02
Modified by: Luna,Susan M. - 11.11.02
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