Paraliparis variabilidens, a new snailfish (Liparidae) from the Suruga Trough, Japan

Abstract

The new snailfish Paraliparis variabilidens is described from a single specimen collected between 1,462 and 1,562 m depth in the northern part of the Suruga Trough, Japan. It differs from all currently recognized congeners by the following combination of characters: 67 total vertebrae, 62 dorsal-fin rays, 57 anal-fin rays, 26 or 27 pectoral-fin rays, 9 caudal-fin rays (including 2 procurrent rays), ca. 12 pyloric caeca, mixed simple and trilobate teeth on both jaws, eye diameter 18.1% HL, gill slit extending ventrally in front of 2nd pectoral-fin ray base, deeply notched pectoral fin, body dusky, peritoneum black, and stomach pale.

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Acknowledgements

We are most grateful to Captain I. Hashigaya and Chief Engineer H. Sakata of T/V Hokuto for their assistance in the sampling program. Grateful thanks are also given to G. S. Hardy (Ngunguru, New Zealand) for his critical reading of the manuscript, I. Sakamoto (Tokai University) for information on the submarine topography of the Suruga Trough and S. Tomiyama (MSM) for depositing the type specimen in the Marine Science Museum, Tokai University. This study was supported in part by a Grant-in-Aid for Promotion of Scientific Research (C) (nos. 25450280 and 18K05792) from the Ministry of Education, Culture, Sports, Science and Technology, Japan, to the third author.

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Correspondence to Kenta Murasaki.

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Murasaki, K., Takami, M. & Fukui, A. Paraliparis variabilidens, a new snailfish (Liparidae) from the Suruga Trough, Japan. Ichthyol Res 66, 509–514 (2019). https://doi.org/10.1007/s10228-019-00692-y

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Keywords

  • New species
  • Paraliparis
  • Liparidae
  • Taxonomy
  • Suruga Trough