FishBase
Larvae Information Summary for  Nansenia crassa
( not available )

Main Ref: Moser, H.G. and J.L. Butler 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     3 35612
Preanal L. % TL        
Place of development planktonic
Larval area California Current region
Yolk-sac     pigmented Ref:  
Yolk segmented Oil globules one oil globulecentralventralunpigmented
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Pigmentation: until early preflexion, paired series between trunk and midgut and hindgut; elongate patch on ventral midline from isthmus to liver.
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal  
Striking feature none
Shape of gut spherical or gut loop
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail two dorso-ventral clusters or bands
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late pigmented
Peritoneum with row of melanophores
Pectorals strikingly large without melanophores
Pelvics normal (i.e. small or absent) melanophores at fin base
Gut fold forms in preflexion stage, pigmented on posterior surface; heavy embedded blotches along dorsum; heavy ventral midline pigment below isthmus and liver; heavy hypural and caudal peduncle blotches; large pectoral fin with early-forming rays. Pigmentation: Late preflexion-early flexion: 6-7 blotches on dorsum anterior to anus; on posterior surface of gut fold. Late flexion-early postflexion: on hypural region; median blotches above and below caudal peduncle. Late postflexion: on lower jaw; snout. Transformation: body surface covered anterior to anal fin origin; heavy on adipose fin, dorsal, and pelvic fin bases and above anus. Sequence of fin development: pectorals and caudal and dorsal, anal, 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. - 18.09.00
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