Larvae Information Summary for  Rhamphocottus richardsonii
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Main Ref: Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter 1989
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area Southern California, 32-34°N, to Bering Sea, 54-66°N
Yolk-sac       Ref:  
Yolk   Oil globules  
Post larvae
Striking feature  
Striking shape lateral   dorsal  
Striking feature  
Shape of gut  
Gas bladder   early   late  
Spinal armature   early   late  
Diagnostic characters: deep-bodied, very long snout-to-anus length; uniformly heavily pigmented; presence of pigmented preanal finfold; prickles develop over most of body by 9-10 mm SL; spines: only one preopercular (small spiny projections appear along the preopercular margin); others include parieal, nuchal, supracleithral, posttemporal, and postocular. Pigment: larvae are uniformly covered with melanophores except for caudal peduncle and the ventral surface of gut. Sequence of fin development: dorsal, anal, and pectorals followed by caudal and pelvics.
  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. - 28.02.00
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