Larvae Information Summary for  Bathyagonus pentacanthus
( not available )

Main Ref: Ambrose, D.A. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area California Current Region
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  
Total vertebrae 40-46; pectoral fin ray 14-16; anal fin ray 6-9; mid dorsal bony plates 15-16; mid ventral bony plates 16-18; by about 13 mm, 2 pairs of plates on breast anterior to pelvic fin; anal finfold completely pigmented; large patch over most of dorsal finfold preceded by a small patch; pigment extends onto <33% of caudal fin; parietals rounded; notochord flexion by about 8 mm; spines present on eye by 16.5 mm. Pigmentation: Preflexion: Absent dorsally on head and caudal finfold, otherwise, completely covering gut and body; small patch anteriorly in dorsal finfold; dorsal finfold posterior to anus and anal finfold completely covered; by about 7 mm, “bearded” appearance. Flexion: Small patch persists in first dorsal region; medium-sized patch in second dorsal region; large patch dorsally in caudal peduncle region. Postflexion-transformation: Patches anteriorly and posteriorly on anal fin; increasing dorsolaterally on head; light or absent on pelvic fin; rounded patch extending on to <33% of caudal fin; about 6 blotches forming laterally on body. Sequence of fin development: pectoral fin, caudal fin, second dorsal fin and anal fin, first dorsal fin, pelvic 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
Water parameters     Metric characters
Entered by: Luna,Susan M. - 03.09.01
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