First Japanese records of a deep-sea chiasmodontid fish, <i>Dysalotus oligoscolus</i>.

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  • Ban Kazuyuki
    東海大学大学院海洋学研究科水産学専攻 株式会社横浜八景島
  • Fukui Atsushi
    東海大学海洋学部水産学科

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Other Title
  • 日本初記録のクロボウズギス科魚類カクシトゲボウズギス（新称）<i>Dysalotus oligoscolus</i>
  • 日本初記録のクロボウズギス科魚類カクシトゲボウズギス(新称)Dysalotus oligoscolus
  • ニホン ハツ キロク ノ クロボウズギスカギョルイ カクシトゲボウズギス(シンショウ)Dysalotus oligoscolus

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Description

Four specimens (62.5–67.8 mm in standard length) of the chiasmodontid fish, Dysalotus oligoscolus Johnson and Cohen, 1974, collected off Boso peninsula, the northeast Bonin Islands and southeastern Kyushu, Japan, represent the first records of the species from Japanese waters. The species is distinguished from a congeneric species, Dysalotus alcocki, by the following combination of characters: two rows of minute external prickles arranged above and below the lateral line; prevomerine teeth present. The new Japanese name “Kakushi-toge-bouzugisu” is proposed for the species.

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