Abstract
Two new species of the elongate snake eel genus Bascanichthys are described from the northwestern Pacific. Bascanichthys kabeyawan sp. nov. is described based on a single specimen collected from estuary of southern Taiwan. It is characterized by having head 4.6% TL; tail 52.3% TL; body depth at gill opening 1.1% TL; predorsal-fin length 58.4% HL; snout length 10.9% HL; body bicolored, head without bands; lateral-line pores anterior to anus 104; vertebral formula 4-103-224. Bascanichthys ryukyuensis sp. nov. is described based on two specimens collected from the shallow water of Okinawa-jima Island, Ryukyu Islands of southern Japan. It is characterized by having head 3.7–4.3% TL; tail 43.3–44.2% TL; predorsal-fin length 40.7–45.4% HL; snout length 11.3–13.1% HL; body pale brown, head without distinct dark bands after preservation; lateral-line pores anterior to anus 114–118; total vertebrae 207–216, mean vertebral formula 2-116-212; and dorsal-fin origin before middle of head.
References
Blache, J. & Cadenat, J. (1971) Contribution à la connaissance des poissons anguilliformes de la côte occidentale d'Afrique. Dixième note: les genres Myrichthys, Bascanichthys et Callechelys (Fam. des Ophichthidae). Bulletin de l'Institut Français d'Afrique Noire (Sér A) Sciences Naturelles, 33 (1), 158–201.
Fricke, R. & Eschmeyer, W.N. (2022) Eschmeyer Catalog of Fishes: Guide to Fish Collections. Electronic version. Available from: http://researcharchive.calacademy.org/research/ichthyology/catalog/collections.asp. (accessed 1 May 2022)
Günther, A. (1870) Catalogue of the fishes in the British Museum. Volume 8. Catalogue of the Physostomi, containing the families Gymnotidae, Symbranchidae, Muraenidae, Pegasidae, and of the Lophobranchii, Plectognathi, Dipnoi, Ganoidei, Chondropterygii, Cyclostomata, Leptocardii, in the Collection of the British Museum. Taylor & Francis, London, 549 pp.
Günther, A. (1872) On some new species of reptiles and fishes collected by J. Brenchley, Esq. Annals and Magazine of Natural History (Series 4), 10, 418–426. https://doi.org/10.1080/00222937208696731
Herre, A.W.C.T. (1932) Five new Philippine fishes. Copeia, 1932 (3), 139–142. https://doi.org/10.2307/1436072
Hibino, Y., Miyamoto, K., Sakurai, Y. & Kimura, S. (2021) Annotated checklist of marine eels (Actinopterygii: Anguilliformes) stranded by a serious cold wave in January 2016 in Ryukyu Islands, Japan, including two newly recorded species of Japan. Bulletin of the Kitakyushu Museum of Natural History and Human History, Series A, 19, 13–26.
Ho, H.-C., Smith, D.G., McCosker, J.E., Hibino, Y., Loh, K.-H., Tighe, K.A. & Shao, K.-T. (2015) Annotated checklist of eels (orders Anguilliformes and Saccopharyngiformes) from Taiwan. Zootaxa, 4060 (1), 140–189. https://doi.org/10.11646/zootaxa.4060.1.16
Jordan, D.S. (1884) List of fishes from Egmont Key, Florida, in the Museum of Yale College, with description of two new species. Proceedings of the Academy of Natural Sciences of Philadelphia, 36, 42–46.
Jordan, D.S. & Davis, B.M. (1891) A preliminary review of the apodal fishes or eels inhabiting the waters of America and Europe. United States Commission of Fish and Fisheries, Report of the Commissioner, 16, 581–677., pls. 73–80.
Kner, R. & Steindachner, F. (1867) Neue Fische aus dem Museum der Herren Joh. C. Godeffroy & Sohn in Hamburg. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe, 54, 356–395.
McCosker, J.E. (1977) The osteology, classification, and relationships of the eel family Ophichthidae. Proceedings of the California Academy of Sciences, Series 4, 41 (1), 1–123.
McCosker, J.E. (1998) A revision of the snake-eel genus Callechelys (Anguilliformes: Ophichthidae), with the description of two new Indo-Pacific species and a new Callechelyin genus. Proceedings of the California Academy of Sciences, 50 (7), 185–214.
McCosker, J.E. (2010) Deepwater Indo-Pacific species of the snake-eel genus Ophichthus (Anguilliformes: Ophichthidae), with the description of nine new species. Zootaxa, 2505 (1), 1–39. https://doi.org/10.11646/zootaxa.2505.1.1
McCosker, J.E. (2014) A gigantic deepwater worm eel (Anguilliformes: Ophichthidae) from the Verde Island Passage, Philippine Archipelago. In: Williams, G.C. & Gosliner, T.M. (Eds.), The Coral Triangle. The 2011 Hearst Philippine Biodiversity Expedition. California Academy of Sciences, San Francisco, pp. 333–340.
McCosker, J.E., Böhlke, E.B. & Böhlke, J.E. (1989) Family Ophichthidae. In: Böhlke, E.B. (Ed.), Fishes of the western North Atlantic. Memoirs of the Sears Foundation of Marine Research. Volume One: Orders Anguilliformes and Saccopharyngiformes. Sears Foundation for Marine Research, Yale University, New Heaven, pp. 254–412.
McCosker, J.E. & Castle, P.H.J. (1986) Family No. 42: Ophichthidae. In: Smith, M.M. & Heemstra, P.C. (Eds.), Smiths' Sea Fishes. Macmillan South Africa, Johannesburg, pp. 176–186.
Menon, A.G.K. (1961) Bascanichthys deraniyagalai, a new eel from the Coromandel coast of India with a key to the Indian Ophichthyidae. Journal of the Zoological Society of India, 13 (1), 13–15.
Mohapatra, A., Kundu, S., Mohanty, S.R., Mishra, S.S., Kumar, V., Tripathy, B. & Chandra, K. (2019) DNA barcoding adjudicate two different morphs of Bascanichthys deraniyagalai (Anguilliformes: Ophichthidae): re-description and first record from Chilika lagoon, India. Mitochondrial DNA part B Resources, 4 (1), 1357–1361. https://doi.org/10.1080/23802359.2019.1598298
Moreno, F., Acero A.P. & Grijalba-Bendeck, M. (2016) A new species of sand eel genus Bascanichthys (Anguilliformes: Ophichthidae) from the Caribbean. Boletín de Investigaciones Marinas y Costeras, 45 (1), 7–14. https://doi.org/10.25268/bimc.invemar.2016.45.1.627
Seale, A. (1917) New species of apodal fishes. Bulletin of the Museum of Comparative Zoology, 61 (4), 79–94.
Seale, A. (1935) The Templeton Crocker Expedition to western Polynesian and Melanesian islands, 1933. No. 27. Fishes. Proceedings of the California Academy of Sciences (Series 4), 21, 337–378., pls. 20–23.
Smith, D.G. & McCosker, J.E. (1999) Family Ophichthidae. In: Carpenter, K.E. & Niem, V.H. Species identification guide for fisheries purposes. The living marine resources of the western central Pacific. Batoid fishes, chimeras and bony fishes part 1 (Elopidae to Linophrynidae). FAO, Rome, pp. 1662–1669.
Storey, M.H. (1939) Contributions toward a revision of the ophichthyid eels. I. The genera Callechelys and Bascanichthys, with descriptions of new species and notes on Myrichthys. Stanford Ichthyological Bulletin, 1 (3), 61–84.
Weber, M. (1913) Die Fische der Siboga-Expedition. E. J. Brill, Leiden, 710 pp.
Zhang, C.-G., Tang, W.-Q., Lium D., Zhang, Z.-L. & Zhang, S.-Y. (2010) Fauna Sinica. Osteichthyes. Anguilliformes, Notacanthiformes. Science Press, Beijing, 453 pp.