Abstract
A new grenadier, Nezumia shinoharai, is described based on two specimens collected from the continental slope off thePacific coast of southern Japan, at depths of 627–700 m. The new species is clearly distinguished from all other congenersby the following combination of characters: pelvic fin rays 10; spinules on body scales needlelike, arranged in discreteparallel rows; underside of head almost completely naked with prominent sensory pores; teeth in broad cardiform bandsin both jaws; snout long (31–34% HL), conically pointed, protruding well beyond upper jaw; first dorsal fin uniformlydark with pale distal tip, second spinous ray not extremely elongated (height of first dorsal fin about equal to HL); no dark band encircling trunk.References
Fricke, R. & Eschmeyer, W.N. (2011) A guide to fish collections in the Catalog of Fishes. Available from: http://researcharchive.calacademy.org/research/ichthyology/catalog/collections.asp. (accessed 9 November 2011).
Gilbert, C.H. & Cramer, F. (1897) Report on the fishes dredged in deep water near the Hawaiian Islands, with descriptions and figures of twenty-three new species. Proceedings of the United States National Museum, 19, 1114, 403–435, pls. 36–48.
Gilbert, C.H. & Hubbs, C.L. (1916) Report on the Japanese macrouroid fishes collected by the United States fisheries steamer “Albatross” in 1906, with a synopsis of the genera. Proceedings of the United States National Museum, 51, 2149, 135–214, pls. 8–11.
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. Studies in Tropical Oceanography, 4, 316–431.
Iwamoto, T. (1990) Family Macrouridae. In: Cohen, D.M., Inada, T., Iwamoto, T. & Scialabba, N. (Eds.) FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fisheries Synopsis no. 125. FAO, Rome, pp. 90–317.
Iwamoto, T. & Graham, K.J. (2001) Grenadiers (families Bathygadidae and Macrouridae, Gadiformes, Pisces) of New South Wales, Australia. Proceedings of the California Academy of Sciences, 52, 407–509.
Iwamoto, T. & Merrett, N.R. (1997) Pisces Gadiformes: taxonomy of grenadiers of the New Caledonian region, southwest Pacific. In: Crosnier, A. (Ed.), Résultats des Campagnes MUSORSTOM, vol.18. Mémoires du Muséum national d’Histoire naturelle, 176, 473–570.
Iwamoto, T. & Sazonov, Y.I. (1988) A review of the southeastern Pacific Coryphaenoides (sensu lato) (Pisces, Gadiformes, Macrouridae). Proceedings of the California Academy of Sciences, 45, 35–82.
Iwamoto, T. & Sazonov, Y.I. (1994) Revision of the genus Kumba (Pisces, Gadiformes, Macrouridae), with description of three new species. Proceedings of the California Academy of Sciences, 48, 221–237.
Iwamoto, T. & Williams, A. (1999) Grenadiers (Pisces, Gadiformes) from the continental slope of western and northwestern Australia. Proceedings of the California Academy of Sciences, 51, 105–243.
Iwamoto, T., Ho, C.-H. & Shao, K.-T. (2009) Description of a new Coelorinchus (Macrouridae, Gadiformes, Teleostei) from Taiwan, with notable new records of grenadiers from the South China Sea. Zootaxa, 2326, 39–50.
Sazonov Y.I. & Iwamoto, T. (1992) Grenadiers (Pisces, Gadiformes) of the Nazca and Sala y Gomez ridges, southeastern Pacific. Proceedings of the California Academy of Sciences, 48, 27–95.
Wilson, R.R., Jr. (2002) A new species of Nezumia (Gadiformes: Macrouridae) from Fieberling Guyot, Eastern North Pacific Ocean. Revista de Biología Tropical, 49 (supplement 1), 29–37.