Abstract
Hymenocephalus yamasakiorum, a new species of grenadier fishes, is described from a single specimen collected from Tosa Bay off Aki, Kochi, Japan, at a depth of 320–400 m. The species is distinguished from its 26 known congeners in having the following combination of features: pelvic-fin rays nine; pectoral-fin rays i16–i17; first dorsal-fin rays II, 10; chin barbel 55 % of head length (HL), its tip extending beyond the hind margin of orbit when laid back; snout moderately high, not depressed, length 28 % HL; orbit diameter 33 % HL; interorbital width 24 % HL; gill rakers on first arch (outer/inner) 14/20, on second arch 20/19; pyloric caeca 15; dorsal half of posterior part of tail prominently blackish.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Akihito, Sakamoto K, Iwata A, Ikeda Y (1993) Cephalic sensory organs of the gobioid fishes. In: Nakabo T (ed) Fishes of Japan with pictorial keys to the species, first edn. Tokai University Press, Tokyo, pp 1088–1116
Endo H, Nashida K (2010) Glossanodon kotakamaru, a new argentine fish from southern Japan (Protacanthopterygii: Argentinidae). Bull Natl Mus Nat Sci, Ser A Suppl 4:119–127
Fricke R, Eschmeyer WN (2015) A guide to fish collections in the Catalog of Fishes. http://researcharchive.calacademy.org/research/ichthyology/catalog/collections.asp. Accessed 2 February 2015
Giglioli EH (1884) Esplorazione talassografica del Mediterraneo. In: Giglioli EH, Issel A (ed) Plagos, Saggio sulla vita e sui prodrotti del mare. Instituto de’ Sordo-muti, Genova, pp 198–270
Gilbert CH, Hubbs CL (1920) The macrouroid fishes of the Philippine Islands and the East Indies. Bull US Natl Mus, No 100 1:369–588
Günther A (1887) Report on the deep-sea fishes collected by H.M.S. Challenger during the years 1873–76. Rep Sci Res Voy HMS Challenger 22:i–lxv + 1–268, pls 1-66
Horikawa H (2009) Calendars of the distribution of demersal fishes in Tosa Bay. Fisheries Biol and Oceanogr Kuroshio (Suppl 1):i–xxi, 1–752
Honda H, Sakaji H, Nashida K (2001) Seasonal changes in biomass of demersal fish and benthos inhabiting the continental shelf and the upper continental slope area of Tosa Bay, southern Japan. Natn Sci Mus Monogr 20:345–362
Iwamoto T (1970) The R/V Pillsbury Deep-Sea Biological Expedition to the Gulf of Guinea, 1964–65. 19. Macrourid fishes of the Gulf of Guinea. Stud Trop Oceanogr 4:316–431
Iwamoto T, Sazonov YI (1988) A review of the southeastern Pacific Coryphaenoides (sensu lato) (Pisces, Gadiformes, Macrouridae). Proc Calif Acad Sci 45:35–82
Iwamoto T, Shao KT, Ho HC (2011) Elevation of Spicomacrurus (Gadiformes: Macrouridae) to generic status, with descriptions of two new species from the southwestern Pacific. Bull Mar Sci 87:513–530
Jordan DS, Starks EC (1904) List of fishes dredged by the steamer Albatross off the coast of Japan in the summer of 1900, with descriptions of new species and a review of the Japanese Macrouridae. Bull US Fish Comm 22:577–630, pls 1–8
Kamohara T (1938) On the offshore bottom-fishes of Prov. Tosa, Shikoku, Japan. Maruzen Co., Ltd, Tokyo
Kamohara T (1952) Revised descriptions of the offshore bottom-fishes of Prov. Tosa, Shikoku, Japan. Res Rep Kochi Univ Nat Sci 3:1–122
Matsubara K (1943) Ichthyological annotations from the depth of the Sea of Japan, I–VII. J Sigenkagaku Kenkyûsyo 1:37–82
Matsubara K, Yamaguti M (1943) On a new serranid fish Malakichthys elegans from Suruga Bay, with special reference to a comparison of hitherto known species. J Sigenkagaku Kenkyûsyo 1:83–96
Matsuura K (1997) Fish collection building in Japan, with comments on major Japanese ichthyologists. In: Pietsch TW, Anderson Jr WD (eds) Collection building in ichthyology and herpetology. American Society of Ichthyologists and Herpetologists, Kansas, pp 171–182
McMillan P, Iwamoto T (2014) Descriptions of four species of grenadier fishes of the genera Hymenocephalus and Hymenogadus (Teleostei, Gadiformes, Macrouridae) from the New Zealand region and Tasman Sea, including two new species of Hymenocephalus. Zootaxa 3856:117–134
Nakabo T, Kai Y (2013) Macrouridae. In: Nakabo T (ed) Fishes of Japan with pictorial key to the species, third edn. Tokai University Press, Hadano, pp 493–512, 1872–1876
Nakayama N, Endo H (2012) A new grenadier of the genus Nezumia (Pisces: Gadiformes: Macrouridae) from southern Japan. Zootaxa 3410:61–68
Okamura O (1970) Fauna Japonica. Macrourina (Pisces). Academic Press, Tokyo
Okamura O (1982) Macrouridae. In Okamura O (ed) Fishes of the Kyushu-Palau Ridge and Tosa Bay. Japan Fisheries Resource Conservation Association, Tokyo, pp 140–181, 345–354
Radcliffe L (1912) Descriptions of a new family, two new genera, and twenty-nine new species of anacanthine fishes from the Philippine Islands and contiguous waters. Proc US Natl Mus 41:105–140, pls 22–31
Saruwatari T, Lopez JA, Pietsch TW (1997) Cyanine blue: a versatile and harmless stain for specimen observations. Copeia 1997:840–841
Schwarzhans W (2014) Head and otolith morphology of the genera Hymenocephalus, Hymenogadus and Spicomacrurus (Macrouridae), with the description of three new species. Zootaxa. 3888:1–73
Shinohara G, Endo H, Matsuura K, Machida Y, Honda H (2001) Annotated checklist of the deepwater fishes from Tosa Bay, Japan. Natn Sci Mus Monogr 20:283–343
Yamanoue Y, Yoseda K (2001) A new species of the genus Malakichthys (Perciformes: Acropomatidae) from Japan. Ichthyol Res 48:257–261
Acknowledgments
Our sincere thanks go to the captain and crew of F/V Kosei-maru and the staff of the Mimase fish market. We are grateful to Ryu Asaoka, Ryo Misawa, Taiga Naito, Kosei Ajisaka, and other BSKU students who variously supported NN’s field surveys at the fish market; Peter McMillan (NIWA) for providing a reference; and Gordon Yearsley (Hobart, Australia) for editing the English text. We also thank Tomio Iwamoto and David Catania (CAS), Masaki Miya (CBM), Jun Hashimoto (FFNU), Hiroyuki Motomura (KAUM), Artem M. Prokofiev (Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow), Jeffrey T. Williams (USNM), Susan M. Morrison (WAM), Ekaterina D. Vasil’eva (ZMMU), and Kazuo Sakamoto (ZMUT) for providing opportunities to examine comparative material. This study was partly supported by a Grant-in-Aid for Scientific Research (B) from the Japan Society for the Promotion of Science, Tokyo (24370041), a Grant-in-Aid of the “Marine Science Project” of the Natural Science Cluster, Science Unit, Kochi University, and the “Kuroshio Sougou Project” of the National Museum of Nature and Science, Tsukuba.
Author information
Authors and Affiliations
Corresponding author
Additional information
This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as 370453EC-5EA3-4B1A-A175-288A819DF20B.
This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number.
About this article
Cite this article
Nakayama, N., Endo, H. & Schwarzhans, W. A new grenadier of the genus Hymenocephalus from Tosa Bay, southern Japan (Actinopterygii: Gadiformes: Macrouridae). Ichthyol Res 62, 504–511 (2015). https://doi.org/10.1007/s10228-015-0464-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10228-015-0464-9