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

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Abstract

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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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

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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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