Ichthyological Research

, Volume 53, Issue 1, pp 7–12 | Cite as

Dolichopteryx rostrata, a new species of spookfish (Argentinoidea: Opisthoproctidae) from the eastern North Atlantic Ocean

  • Atsushi Fukui
  • Yasuyuki Kitagawa
Full paper


A new species, Dolichopteryx rostrata, is described on the basis of a single specimen (66.2 mm in standard length) collected west of the Hebrides Islands, eastern North Atlantic Ocean. The new species is characterized by an elongate snout and head, small pouchlike eyes, an adipose fin, short dorsal fin base, anal fin base originating under dorsal fin base, a clear longitudinal suborbital brownish band extending forward from behind posterior margin of orbit to snout tip, and 41 (=26 + 15) vertebrae. Total fecundity is low; the ovarian eggs number only 473, despite the ovary having developed ova. Ovarian eggs could be clearly subdivided into an “undeveloped group” (0.1–0.7 mm diameter classes, n = 405) and a “developed group” (0.9–1.3 mm classes, n = 68), based on their frequency distribution.

Key words

Dolichopteryx rostrata New species Opisthoproctidae Eastern North Atlantic 


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Supplementary material

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Comparison of three valid Dolichopteryx species. Upper, Dolichopteryx rostrata sp. nov., BMNH 2000.1.14.85, holotype, 66.2 mm SL (ovary already removed); middle, Dolichopteryx longipes, BMNH 1969.6.26.534, 57.1 mm SL; lower, Dolichopteryx binocularis, BMNH 1930.1.12.10, 97.6 mm SL


  1. Ahlstrom, EH, Moser, HG, Cohen, DM 1984Argentinoidei: development and relationshipsMoser, HGRichards, WJCohen, DMFahay, MPKendall, AW,JrRichardson, SL eds. Ontogeny and systematics of fishes. Special publication 1American Society of Ichthyologists and HerpetologistsLawrence, KS155169Google Scholar
  2. Badcock, J 1988Evidence for the assignment of Dolichopteryx brachyrhynchus Parr to the genus Bathylychnops Cohen (Pisces, Opisthoproctidae)J Fish Biol32423432CrossRefGoogle Scholar
  3. Beebe, W 1932Nineteen new species and four post-larval deep-sea fishZoologica (NY)1347107Google Scholar
  4. Brauer, A 1901Über einige von der Valdivia-Expedition gesammelte Tiefseefische und ihre AugenSitzungsber Ges Naturw Marburg8115130Google 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 1–18Google Scholar
  6. Cohen, DM 1958Bathylychnops exilis, a new genus and species of argentinoid fish from the North PacificStanford Ichthyol Bull74752Google Scholar
  7. Cohen, DM 1964Suborder ArgentinoideaFishes of the western North Atlantic. Part 4. Memoirs of the Sears Foundation in Marine Research, No 1Yale UniversityNew Haven170Google Scholar
  8. Eschmeyer, WN 1998Collection abbreviationsEschmeyer, WN eds. Catalog of fishesCalifornia Academy of SciencesSan Francisco1622Google Scholar
  9. Fujii, E 1984Family OpisthoproctidaeMasuda, HAmaoka, KAraga, CUyeno, TYoshino, T eds. The fishes of the Japanese Archipelago (English text and plates)Tokai University PressTokyo4142plate 46Google Scholar
  10. Heemstra, PC 1986Family No 63: OpisthoproctidaeSmith, MMHeemstra, PC eds. Smiths' sea fishesSpringerBerlin216218Google Scholar
  11. Kobylianskii, SG, Fedorov, VV 2001A new species of the genus DolichopteryxD. parini (Opisthoproctidae, Salmoniformes) from the mesopelagial zone of the Sea of Okhotsk and the Bering SeaJ Ichthyol41115118Google Scholar
  12. Mecklenburg, CW, Mecklenburg, TA, Thorsteinson, LK 2002OpisthoproctidaeMecklenburg, CWMecklenburg, TAThorsteinson, LK eds. Fishes of AlaskaAmerican Fisheries SocietyBethesda, MD156Google Scholar
  13. Moser, DA 1996Opisthoproctidae: spookfishesMoser, HG eds. The early stages of fishes in the California Current region. CalCOFI atlas 33CalCOFILa Jolla, CA216223Google Scholar
  14. Nakabo, T 2002Introduction to ichthyologyNakabo, T eds. Fishes of Japan with pictorial keys to the species (English edition)Tokai University PressTokyoxxixliiGoogle Scholar
  15. Parin, NV 2005Dolichopteryx trunovi sp. nova: a new name for D. anascopa (nec Brauer, 1901) Trunov, 1997 (Opisthoproctidae, Argentinoidea)J Ichthyol45132133Google Scholar
  16. Parr, AE 1937Concluding report on fishes. With species index for articles 1–7 (fishes of the third oceanographic expedition of the “PawneeBull Bingham Oceanogr Collect Yale Univ3179Google Scholar
  17. Paxton, JR, Cohen, DM 1999Families Argentinidae, Microstomatidae, Bathylagidae, and OpisthoproctidaeCarpenter, KENiem, VH eds. FAO species identification guide for fishery purposes, vol 1FAORome18861887Google Scholar
  18. Stein, DL, Bond, CE 1985Observations on the morphology, ecology, and behaviour of Bathylychnops exilis CohenJ Fish Biol27215228CrossRefGoogle Scholar
  19. Trunov, IA 1997The species of the Opisthoproctidae family from the southern Atlantic OceanJ Ichthyol37810814Google Scholar
  20. Vaillant LL (1888) Expéditions scientifiques du “Travailleur” et du “Talisman” pendant les années 1880, 1881, 1882, 1883. Poissons Paris Exped Travailleur et Talisman 1–406, pls 1–28Google Scholar

Copyright information

© The Ichthyological Society of Japan 2006

Authors and Affiliations

  1. 1.Department of Fisheries, School of Marine Science and TechnologyTokai UniversityShizuokaJapan
  2. 2.Clinical Development CenterKyowa-Hakko Kogyo Co., LtdTokyoJapan

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