FishBase
Larvae Information Summary for  Atherinella nepenthe
( not available )

Main Ref: Watson, W. 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  
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 triangular
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head
Pigmentation late
Rows on tail lateral 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 normal (i.e. small or absent) without melanophores
External pigment over hindbrain in larvae; dorsal and ventral tail pigment only on caudal peduncle; midlateral stripe extends to 2nd-4th from last myomere in larvae, to hypural margin with no posterior constriction in juveniles; 2nd dorsal fin insertion above last or next to last anal fin ray; myomeres 9-10 + 25-26 = 40 in juveniles. Pigmentation: Postflexion-transformation: 3 (large) in triangular pattern over midbrain; 1 to several anteriorly over hindbrain; over forebrain, near nostrils, and on upper lip and dentary by 10.8 mm; under gill cover, spreading onto branchiostegal membrane by about 11.7 mm; laterally and ventrally on brain, surrounding it after 12.8 mm; heavy dorsally on gut, scattered and increasing laterally and ventrally; midlateral series on tail at myomeres 8 to 35-38, broadening and extending to pectoral fin base after 12.8 mm; internal series above and below vertebral column; 1-2 each on dorsal and ventral margins near the caudal fin. Juvenile: heavy around brain, on snout, under gill cover, and around gut; broad stripe from pectoral fin base to hypural margin; on anterior dorsal and anal fin ray bases; on caudal fin, primarily outer third of fin. Sequence of fin development: caudal, 2nd dorsal and anal and pectorals, pelvics, 1st dorsal.
Meristic characters
  max min mod Ref.
Total number of vertebrae 41 39   36497
  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
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