Japanese Journal of Ichthyology

, Volume 36, Issue 3, pp 327–337 | Cite as

Larval development, growth and age determination in the sharpnose pufferfishCanthigaster valentini (Teleostei: Tetraodontidae)

  • Gregory J. Stroud
  • Barry Goldman
  • William Gladstone


The eggs, early larvae and juveniles of the sharpnose pufferfishCanthigaster valentini are described, based on material collected in Great Barrier Reef waters. Eggs were obtained in the field by divers and reared in the laboratory. The eggs are spherical, strongly adhesive, 0.68–0.72 mm in diameter, possess a dense cluster of small oil droplets, and hatch around sunset 3 to 5 days after fertilization. Newly hatched larvae have a small yolk sac, pectoral fin folds, 17 myomeres (6 pre-anal, 11 post-anal) and measure 1.30–1.40 mm in notochord (standard) length. The eggs ofC. valentini differ from those of other tetraodontids in being much smaller and having a longer incubation time. The larvae can be distinguished from other tetraodontid larvae by pigmentation, myomere count and size at hatching. Growth is most rapid during the first day of larval life. Age determinations (based on otolith microstructure) of field collected juveniles, both pelagic and newly settled, indicate a pelagic phase of between 64 and 113 days for this species. This estimate appears consistent with the extended pelagic juvenile stages observed in other tetraodontiform fishes and could indicate thatC. valentini can delay settlement for some time after becoming competent to settle at a minimum age of 64 days.


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Copyright information

© The Ichthyological Society of Japan 1989

Authors and Affiliations

  • Gregory J. Stroud
    • 1
  • Barry Goldman
    • 2
  • William Gladstone
    • 3
  1. 1.Centre for Environmental and Urban StudiesMacquarie UniversityNorth RydeAustralia
  2. 2.Lizard Island Research StationCairnsAustralia
  3. 3.Centre for Environmental and Urban Studies, and School of Biological SciencesMacquarie UniversityNorth RydeAustralia

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