Paraliparis ruficometes sp. nov. (Liparidae), a new snailfish from Suruga Trough, Japan


A new liparid fish, Paraliparis ruficometes sp. nov., is described from 28 specimens collected between 1,430–2,070 m depth in Suruga Trough, Suruga Bay, Japan. It can be distinguished from all currently recognized congeners by the following combination of characters: 61–64 total vertebrae; 53–59 dorsal-fin rays; 48–52 anal-fin rays; 20–25 pectoral-fin rays, lower part of each ray completely free; 6 principal caudal-fin rays, dorsalmost elongate, about 2 or 3 times length of other rays; simple teeth on both jaws; gill slit 5.9–10.0% SL, extending in front of 9th–13th pectoral-fin ray base; 4 pectoral proximal radials (all unnotched); peritoneum and stomach black.

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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 B. L. Sidlauskas and P. Konstantinidis (OS) for specimen loans, G. S. Hardy (Ngunguru, New Zealand) for his critical reading of the manuscript, N. Suzuki (Tokai University) for information on the sensory organs of fishes, and I. Sakamoto (Tokai University) for information on the submarine topography of Suruga Trough. We express our sincere thanks to D. L. Stein (OS) for providing valuable advice and information. 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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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as D837EB9C-8611-45E3-8491-A0BCE9E5A044.

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Murasaki, K., Takami, M. & Fukui, A. Paraliparis ruficometes sp. nov. (Liparidae), a new snailfish from Suruga Trough, Japan. Ichthyol Res 66, 88–96 (2019).

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  • Paraliparis ruficometes
  • Liparidae
  • New species
  • Suruga Bay