First Japanese record of <i>Aphyonus gelatinosus</i> (Ophidiiformes, Aphyonidae)

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  • Ohashi Shinpei
    北海道大学大学院水産科学院海洋生物学講座（魚類体系学領域）
  • Imamura Hisashi
    北海道大学大学院水産科学研究院海洋生物学分野（魚類体系学領域）
  • Yabe Mamoru
    北海道大学大学院水産科学研究院海洋生物学分野（魚類体系学領域）

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Other Title
  • 日本初記録のソコオクメウオ科魚類 コンニャクオクメウオ（新称）<i>Aphyonus gelatinosus</i>
  • 日本初記録のソコオクメウオ科魚類コンニャクオクメウオ(新称)Aphyonus gelatinosus
  • ニホン ハツ キロク ノ ソコオクメウオカギョルイ コンニャクオクメウオ(シンショウ)Aphyonus gelatinosus

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Abstract

Two specimens (131.5 and 147.0 mm in standard length) of the Gelatinous Blindfish Aphyonus gelatinosus Günther, 1878, collected from southern Japan (Kumano Sea and near the Tori Island, part of the Izu Island chain), were found among preserved specimens held by the Department of Natural Science, Faculty of Science, Kochi University, Kochi, Japan and National Museum of Nature and Science, Tsukuba, Japan. Aphyonus gelatinosus is recognizable in having only a single pelvic fin ray, high numbers of dorsal fin rays (92–118) and caudal vertebrae (46–55), few long gill rakers (3–4), and short predorsal length (26.5–30.5% SL). This species and genus is known from the Pacific Ocean, but not from the north Pacific including Japanese waters. Thus, these specimens are a new record of both the genus Aphyonus and A. gelatinosus for Japan.

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