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Larvae Information Summary for  Gobiesox rhessodon
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Main Ref: Watson, W. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 4 3    
Preanal L. % TL        
Place of development planktonic
Larval area California Current region
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature other
Striking shape lateral normal (not striking) dorsal  
Striking feature other
Shape of gut elongated
Gas bladder   early pigmented late pigmented
Spinal armature   early   late  
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 ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Pectorals normal melanophores at fin base
Pelvics joint at base or sucker disk  
Lateral melanophores on trunk and first 1-3 postanal myomeres; melanophores on ventral margin of tail; myomeres 13-15 + 14-17 = 28-30 (usually 13-14 + 15-16 = 29). Pigmentation: Preflexion-postflexion: 0-4 dorsally on head (usually 0-1); present or absent internally under hindbrain (usually present); on pectoral fin base near insertion (sometimes absent); dorsally along length of gut and over gas bladder; about 8-17 externally laterally on body, from level of pectoral fin to about first to third postanal myomere; 1 to about 7 or 8 along ventral margin of tail, often restricted to posterior half of tail. Juvenile: body completely pigmented, usually with mottled or weakly banded pattern. Sequence of fin development: caudal, dorsal and anal, pectorals and pelvics.
Meristic characters
  max min mod Ref.
Total number of vertebrae 29 28   36496
  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. - 30.10.00
Modified by: Luna,Susan M. - 10.11.00
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