Ichthyological Research

, Volume 62, Issue 3, pp 320–326 | Cite as

Neoepinnula minetomai, a new species of sackfish from off Kuchierabu-jima Island, southern Japan (Actinopterygii: Gempylidae)

  • Naohide Nakayama
  • Yûki Kimura
  • Hiromitsu Endo
Full Paper


Neoepinnula minetomai, a new species of sackfish, is described from two specimens collected from the East China Sea off Kuchierabu-jima Island, Kagoshima, Japan, at depths of about 380–420 m. The species is separable from its two congeners, Neoepinnula americana and Neoepinnula orientalis, by the following combination of characters: orbit huge, 1.0–1.1 in snout length, its upper margin forming predorsal profile in lateral view; fleshy interorbital width less than orbit diameter; posteroventral corner of preopercle forming an acute angle; distal margin of second dorsal and anal fins concave; tip of lower jaw without distinctly enlarged fangs; lower lateral line above pectoral fin base hidden behind opercle; oral cavities uniformly blackish; head length (HL) 33.5–34.8 % standard length (SL); body depth at pelvic fin base 28.2–29.0 % SL, and at anal fin origin 27.0–28.0 % SL; pectoral fin length 17.9–18.1 % SL; upper caudal fin lobe length 25.6 % SL; lower caudal fin lobe length 23.4–24.0 % SL; snout length 31.3–33.4 % HL; postorbital length 38.2–39.0 % HL; upper jaw length 40.5–41.2 % HL.


Deep-sea fish Kagoshima Satsunan Islands East China Sea Taxonomy 



Our sincere thanks go to Takeshi Minetoma (Kagoshima, Japan) for his generous help in collecting specimens. We also thank Gento Shinohara, Masanori Nakae, and Eri Katayama (NSMT-P) and Robert Robins (UF) for loans of specimens; Yuki Nagano (HUMZ) for providing copies of Russian literature; Taiga Naito (BSKU) for his help in taking radiographs. Fumihito Tashiro (FAKU) kindly assisted us in producing Fig. 3. Our special thanks go to Martin Gomon (NMV) who reviewed an early draft of the manuscript and provided valuable comments. This study was partly supported by a Grant-in-Aid for Scientific Research (B) from the Japan Society for the Promotion of Science, Tokyo (24370041), a Grant-in-Aid of the “Marine Science Project” of the Natural Science Cluster, Science Unit, Kochi University, and the “Kuroshio Sougou Project” of the National Museum of Nature and Science, Tsukuba.


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Copyright information

© The Ichthyological Society of Japan 2014

Authors and Affiliations

  • Naohide Nakayama
    • 1
  • Yûki Kimura
    • 2
  • Hiromitsu Endo
    • 1
  1. 1.Laboratory of Marine Biology, Faculty of ScienceKochi UniversityKochiJapan
  2. 2.Laboratory of Biology of Aquatic ResourcesGraduate School of Biosphere Science, Hiroshima UniversityHiroshimaJapan

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