Ichthyological Research

, Volume 55, Issue 3, pp 267–273

Dolichopteryx pseudolongipes, a new species of spookfish (Argentinoidei: Opisthoproctidae) from the eastern Pacific Ocean

  • Atsushi Fukui
  • Yasuyuki Kitagawa
  • Nikolay V. Parin
Full Paper


A new species of opisthoproctid, Dolichopteryx pseudolongipes, is described on the basis of three specimens (48.7–79.9 mm in standard length: SL) collected from the eastern Pacific Ocean. This species is characterized by small tubular eyes (diameter 2.7–3.9% SL), presence of an adipose fin, anal fin base originating under the dorsal fin base, relatively short predorsal (73.3–73.8% SL), prepelvic (64.3–67.9% SL), preanal (77.4–80.1% SL), and preanus (71.5–75.7% SL) lengths; 31–33 (=9–10 + 22–24) gill rakers and 43–45 vertebrae. Although D. pseudolongipes had previously been confused with Dolichopteryx longipes, many differences between the species are apparent [e.g., adipose fin absent, anal fin base origin just behind dorsal fin base, greater prepelvic length (70.3–72.7% SL), 25 gill rakers, and 46–47 vertebrae in D. longipes].


Dolichopteryx pseudolongipes New species Opisthoproctidae Eastern Pacific Ocean 

Copyright information

© The Ichthyological Society of Japan 2008

Authors and Affiliations

  • Atsushi Fukui
    • 1
  • Yasuyuki Kitagawa
    • 2
  • Nikolay V. Parin
    • 3
  1. 1.Department of Fisheries, School of Marine Science and TechnologyTokai UniversityShizuokaJapan
  2. 2.Clinical Development CenterKyowa-Hakko Kogyo Co. LtdTokyoJapan
  3. 3.Shirshov Institute of OceanologyRussian Academy of SciencesMoscowRussia

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