EGG INFORMATION
Egg Diameter (min-max in mm): 1.3 - 1.66
Number of Oil Globules (min-max): 1
Oil Globule Diameter (min-max in mm): 0.27 - 0.46
Yolk: Segmented
Chorion: Pustules
Egg/Embryo Pigment: nape, dorsal, ventral, anus, notochord tip,
Pigment Diagnostics: Diagnostic Characters: Oil globule at vegetal pole, pustules (pronounced raised bumps on inner suface of envelope) more pronounced than in bathylagid eggs
LARVAE INFORMATION
Hatch Size (min-max in mm SL): Preanal Length (%SL): 76 - 84
Flexion Length (in mm SL): >9
Length at Transformation (in mm SL): 25 - 30 (prolonged)
Fin Development Sequence: Caudal, dorsal and anal, pectorals, pelvics
Larval Pigment Regions: In each developmental larval stage, pigment is present in the regions listed below
(click for
pigment regions)
Yolk-sac: yolk, mouth, dorsal gut, lateral gut, ventral, caudal,
Preflexion: mouth, cheek, dorsal gut, lateral gut, caudal finfold, ventral, caudal,
Flexion: mouth, crown, cheek, dorsal gut, lateral gut, caudal finfold, pectoral fin, dorsal, ventral, mediolateral, caudal,
Postflexion: mouth, crown, cheek, dorsal gut, lateral gut, caudal finfold, pectoral fin, dorsal, ventral, mediolateral, caudal,
Juvenile:
Pigment Diagnostics: Distinguished from Nansenia candida by: presence of internal pigment on head; caudal pigment on preflexion larvae; fewer spots over gut
Diagnostic Characters: Transverse rugae lining gut, fin rays form in finfold away from body margin. Distinguished from Nansenia candida by: presence of internal head pigment, caudal pigment on preflexion larvae, fewer spots over gut
