Careproctus surugaensis sp. nov. (Liparidae), a new snailfish from Suruga Trough, Japan

Abstract

A new species of liparid fish Careproctus surugaensis is described from a single specimen collected between 1,450 and 1,570 m depth on the northern part of Suruga Trough, Suruga Bay, Japan. It can be distinguished from all currently recognized congeners by the following combination of characters: 50 total vertebrae, 47 dorsal-fin rays, 39 anal-fin rays, 32 pectoral-fin rays, 10 principal caudal-fin rays, pectoral proximal radials 4 (first to third with notches); trilobate teeth on both jaws, gill slit 7.1 % SL, extending in front of 7th pectoral fin ray base; maximum body depth 19.1 % SL, disk length 7.9 % SL, anus midway between posterior margin of pelvic disk and anal-fin origin; body and fins light orange except blackish peritoneum.

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Acknowledgments

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 J. T. Williams and S. J. Raredon (USNM) for specimen loans, G. S. Hardy (Ngunguru, New Zealand) for his critical reading of the manuscript and I. Sakamoto (Tokai University) for information on the submarine topography of Suruga Trough. This study was supported in part by a Grant-in-Aid for Promotion of Scientific Research (C) (no. 25450280) 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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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as http://zoobank.org/urn:lsid:zoobank.org:pub:07E3C171-ECF1-47D4-97A4-23B6528F8875.

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Murasaki, K., Takami, M. & Fukui, A. Careproctus surugaensis sp. nov. (Liparidae), a new snailfish from Suruga Trough, Japan. Ichthyol Res 65, 237–244 (2018). https://doi.org/10.1007/s10228-017-0611-6

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Keywords

  • Suruga snailfish
  • Careproctus surugaensis
  • New species
  • Near bottom
  • Suruga Bay