Larvae Summary

Larvae Information Summary for Anotopterus nikparini

( not available )

Main Ref:

Ambrose, D.A. 1996

Yolk-sac larvae

	max	min	mod	Ref.
Length at birth (mm)	8
Preanal L. % TL	69	61

Place of development	planktonic
Larval area	Northeastern Pacific (California Current region); Northwestern Pacific (Japan)
Yolk-sac		Ref:
Yolk		Oil globules
Rows on tail
Other melanophores on tail

Post larvae

Striking feature	teeth clearly visible
Striking shape lateral	eel-like	dorsal
Striking feature	teeth clearly visible
Shape of gut	tube-like
Gas bladder early		late
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
Melanophores on head + trunk	melanophores on head + trunk
Urostyle region early	unpigmented	late	unpigmented
Peritoneum	without melanophores
Pectorals	normal without melanophores
Pelvics	normal (i.e. small or absent) without melanophores
Long slender body, large head, pointed snout; fleshy prolongation at jaw tips; two large canine teeth; gut extending to midbody; no dorsal fin; peritoneal pigment patches absent; by about 29 mm, sinuous tube along dorsum between head and adipose fin. Pigmentation: Preflexion: by 8.5 mm, on lower jaw projection, scattered on snout and brain, lateral patch posterior to eye, dorsolaterally along gut, along ventral margin of tail, and at edges of finfold and anal and adipose fin regions; along posterior half of dorsum; absent from end of tail. Transformation: by about 25 mm, scattered over body, and concentrated along dorsum. Sequence of fin development: caudal, anal, adipose, pectorals, pelvics.

Meristic characters

	max	min	mod	Ref.
Total number of vertebrae	83	78		35956

	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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