Ichthyological Research

, Volume 55, Issue 3, pp 267–273 | Cite as

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 



Authors thank P.A. Hastings and C. Klepadlo (SIO), B. Séret (MNHN), J. Maclaine (BMNH), K. Tsukamoto (ORIT), M. Okiyama (Tokyo, Japan), and P. Bartsch (ZMB) for specimen loans or radiographs, and the captains and crews of R/V Hokuho-maru and scientists on board during Cruises KH-81-4, KH-86-4, KH-02-2, and KH-04-2 for their assistance in sampling. Grateful thanks are also given to G.S. Hardy (Ngunguru, New Zealand) and M. Okiyama for their critical comments on the manuscript and great help with English.


  1. Ahlstrom EH, Moser HG, Cohen DM (1984) Argentinoidei: development and relationships. In: Moser HG, Richards WJ, Cohen DM, Fahay MP, Kendall AW Jr, Richardson SL (eds) Ontogeny and systematics of fishes. Special publication 1. American Society of Ichthyologists and Herpetologists, Lawrence, pp 155–169Google Scholar
  2. Badcock J (1988) Evidence for the assignment of Dolichopteryx brachyrhynchus Parr to the genus Bathylychnops Cohen (Pisces, Opisthoproctidae). J Fish Biol 32:423–432CrossRefGoogle Scholar
  3. Beebe W (1932) Nineteen new species and four post-larval deep-sea fish. Zoologica (NY) 13:47–107Google Scholar
  4. Brauer A (1901) Über einige von der Valdivia-Expedition gesammelte Tiefseefische und ihre Augen. Sitzungsber Ges Naturw Marburg 8:115–130Google Scholar
  5. Brauer A (1906) Die Tiefsee-Fische. I. Systematischer Teil. In: Chun C (ed) Wissenschaftl. Ergebnisse der deutschen Tiefsee-Expedition “Valdivia,” 1898–99. Jena Tiefsee-Fische 15:1–432, pls 1–18 Google Scholar
  6. Cohen DM (1964) Suborder Argentinoidea. In: Bigelow HB (ed) Fishes of the western North Atlantic. Pt 4. Mem Sears Found. Mar Res, No. 1, Yale Univ, New Haven, pp 1–70Google Scholar
  7. Cohen DM (1984) Opisthoproctidae. In: Whitehead PJP, Bauchot ML, Hureau JC, Nielsen J, Tortonese E (eds) Fishes of the north-eastern Atlantic and the Mediterranean, Unesco, Paris, pp 395–398Google Scholar
  8. Fitch JE, Lavenberg RJ (1968) Deep-water teleostean fishes of California. University of California Press, Berkeley, Los AngelesGoogle Scholar
  9. Fukui A, Kitagawa Y (2006a) Dolichopteryx rostrata, a new species of spookfish (Argentiniformes: Opisthoproctidae) from the eastern North Atlantic Ocean. Ichthyol Res 53:7–12CrossRefGoogle Scholar
  10. Fukui A, Kitagawa Y (2006b) Dolichopteryx minuscula, a new species of spookfish (Argentiniformes: Opisthoproctidae) from the western North Pacific and Indian Oceans. Ichthyol Res 53:113–120CrossRefGoogle Scholar
  11. Grey M (1952) First record of the deepsea fish Dolichopteryx longipes from the Pacific, with notes on Ophthalmopelton macropus. Copeia 1952:87–90CrossRefGoogle Scholar
  12. Kobylianskii SG, Fedorov VV (2001) A new species of the genus DolichopteryxD. parini (Opisthoproctidae, Salmoniformes) from the mesopelagial zone of the Sea of Okhotsk and the Bering Sea. J Ichthyol 41:115–118Google Scholar
  13. Leviton AE, Gibbs RH Jr, Heal E, Dawson CE (1985) Standards in herpetology and ichthyology: part I. Standard symbolic codes for institutional resource collections in herpetology and ichthyology. Copeia 1985:802–832Google Scholar
  14. Mecklenburg CW, Mecklenburg TA, Thorsteinson LK (2002) Opisthoproctidae. In: Mecklenburg CW, Mecklenburg TA, Thorsteinson LK (eds) Fishes of Alaska. American Fisheries Society, Bethesda, p 156Google Scholar
  15. Moser DA (1996) Opisthoproctidae: spookfishes. In: Moser HG (ed) The early stages of fishes in the California Current region. CalCOFI atlas 33. CalCOFI, La Jolla, pp 216–223Google Scholar
  16. Nakabo T (2002) Introduction to ichthyology. In: Nakabo T (ed) Fishes of Japan with pictorial keys to the species (English edition). Tokai University Press, Tokyo, pp xxi–xliiGoogle Scholar
  17. Parin NV (2005) Dolichopteryx trunovi sp. nova—a new name for D. anascopa (nec Brauer, 1901) Trunov, 1997 (Opisthoproctidae, Argentinoidea). J Ichthyol 45:132–133Google Scholar
  18. Parr AE (1937) Concluding report on fishes. With species index for articles 1–7 (fishes of the third oceanographic expedition of the “Pawnee”). Bull Bingham Oceanogr Collect Yale Univ 3:1–79Google Scholar
  19. Paxton JR, Cohen DM (1999) Families Argentinidae, Microstomatidae, Bathylagidae, and Opisthoproctidae. In: Carpenter KE, Niem VH (eds) FAO species identification guide for fishery purposes, vol 1. FAO, Rome, pp 1886–1887Google Scholar
  20. Trunov IA (1997) The species of the Opisthoproctidae family from the southern Atlantic Ocean. J Ichthyol 37:810–814Google Scholar
  21. Vaillant LL (1888) Expéditions scientifiques du “Travailleur” et du “Talisman” pendant les années 1880, 1881, 1882, 1883. Poissons. G. Masson, Éditeur, ParisGoogle Scholar

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

Personalised recommendations