First Record of an Adult Specimen of Ragfish <I>Icosteus aenigmaticus</I> from Japan

DOI
  • Kubota Tadashi
    Department of Fisheries, College of Marine Science and Technology, Tokai University Nippon Luther Shingaku Daigaku
  • Uyeno Teruya
    Department of Fisheries, College of Marine Science and Technology, Tokai University Nippon Luther Shingaku Daigaku

Bibliographic Information

Other Title
  • 日本で初記録のイレズミコンニャクアジ成魚について

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Description

Young specimens of Icosteus aenigmaticus Lockington have been reported from several places in Japan.All of these specimens were less than 326 mm in total length and were described as deep-bodied, having blotches on body, pelvic fins, and rounded posterior margin of the caudal fin.The specimen reported here is a mature male collected from Suruga Bay, : Shizuoka Prefecture, on March 15, 1970.The total length is 950 mm.The body color before fixation was dark brown and the pelvic fin is absent.The posterior margin of the caudal fin is lunate.The characters of this specimen match well with those of the specimen described as Acrotus willoughbyi Bean, which has been considered to be a junior synonym of Icosteus aenigmaticus.The appearance of the specimen in Suruga Bay is probably related to the appearance of unusually cold water masses off the coast of southern Japan on the Pacific side.

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Details 詳細情報について

  • CRID
    1390001204768667776
  • NII Article ID
    130003825889
  • DOI
    10.11369/jji1950.18.51
  • ISSN
    18847374
    00215090
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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