Spawning and rearing of a porcupine puffer <I>Cyclichthys orbicularis</I> (Diodontidae, Tetraodontiformes) in captivity

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  • Doi Hiroyuki
    Shimonoseki Marine Science Museum "Kaikyokan", Shimonoseki Academy of Marine Science
  • Ishibashi Toshiaki
    Shimonoseki Marine Science Museum "Kaikyokan", Shimonoseki Academy of Marine Science
  • Sakai Harumi
    Department of Applied Aquabiology, National Fisheries University

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Other Title
  • メイタイシガキフグの水槽内での産卵と発育
  • Spawning and rearing of a porcupine puffer Cyclichthys orbicularis (Diodontidae, Tetraodontiformes) in captivity

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Description

Cyclichthys orbicularis (Diodontidae, Tetraodontiformes) were spawned in captivity, the larvae being reared for more than 60 days, in the Shimonoseki Marine Science Museum Aquarium. Isolated epipelagic eggs, 2.2 mm in mean diameter, hatched two days after spawning. Hatched larvae were 3.5 mm in total length, the head and trunk being covered by a "vesicular dermal sac". Fin rays were completed in 17 days after hatching at 7.6 mm TL, some rudimentary spines appearing on the dorsum. Spines had become unmovable in 39 days after hatching at 20.8 mm TL. Growth rates from hatching to 8 days and thereafter from 9 days were different, growth regression equations between TL (y) and days after hatching (x) being y = 0.052x + 3.518 and y = 0.295x + 2.046, respectively.

Journal

  • Aquaculture Science

    Aquaculture Science 63 (2), 207-212, 2015

    Japanese Society for Aquaculture Science

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