Larvae Information Summary for  Paralichthys dentatus
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Main Ref: Scotton, L.N., R.E. Smith, N.S. Smith, K.S. Price and D.P. de Sylva 1973
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     3.1 39017
Preanal L. % TL        
Place of development  
Larval area Delaware Bay (USA)
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Vent is located about halfway between snout and tip of tail. At about 3 mm, pigment is scattered and faint, caudal finfold unpigmented except for melanophores at its base. At slightly large size, pigment spots more numerous and larger.
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal  
Striking feature none
Shape of gut  
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail dorsal + ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Peritoneum with row of melanophores
Pectorals normal  
Pelvics normal (i.e. small or absent)  
At 3.4-8.0 mm, pigment spots are present on the dorsal and ventral finfolds and along the dorsal and ventral edge of the trunk and tail. At 8.0-9.5 mm, There is a row of 7 to 9 melanophores along the lateral line and small spots along the ventral edge of the head and gut. At about 9.5 mm SL, right eye begins to move to the left side. At 12.0 mm SL, right eye can be seen over the dorsal edge of the skull. At 12.1-14.0 mm, the full complement of fin rays are present; from this size on, the dorsal fin ray number serves to separate P. dentatus from P. oblongus. Postlarval pigmentation along the dorsal and anal fins does not appear to be a consistent characteristic: the 'well-defined' band of black pigment along the border of the anterior 4/5 of the dorsal and anterior 2/3 of the anal fin in specimens 9-15 mm SL was not present in postlarvae from Cape Sable to Block Island, and was not evident presumably until the dorsal and anal fin rays were formed, i.e., at about 12 mm, in another study.
  L 1st feeding Ref. Months of presence of larvae
max 8 39467 Jan Feb Mar Apr
min 3.4 39467 May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Luna,Susan M. - 14.12.01
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