Abstract
The eel fauna (orders Anguilliformes and Saccopharyngiformes) of Taiwan is increased to 14 families, 79 genera and 232 species. Previous studies (Ho et al., 2015b, c) showed Taiwan had the highest diversity of eels in the world: this is further supported in the present updated work. Elsewhere in this volume, 16 species are newly described and 13 species are newly added to the Taiwanese ichthyofauna, mainly in the families Congridae and Synaphobranchidae. In addition, one new genus and four new species are described from adjacent waters in the Pacific Ocean. A total of 58 new species of the two eel orders are described from Taiwan; 52 of them are valid, and 37 are only found in Taiwan. Four names previously recorded in Taiwan are described as new in present special issue and are removed from the fauna of Taiwan accordingly. This work provides a foundation for the study of eel diversity in Taiwan.
References
Asano, H. (1958) Studies on the conger eels of Japan. II. Description of two new fishes referable to the genera Rhynchocymba and Promyllantor. Dobutsugaku Zasshi = Zoological Magazine Tokyo, 67 (7), 197–201. [in Japanese]
Bleeker, P. (1853) Diagnostische beschrijvingen van nieuwe of weinig bekende vischsoorten van Sumatra. Tiental V-X. Natuurkundig Tijdschrift voor Nederlandsch Indië, 4 (2), 243–302.
Castle, P.H.J. & Smith, D.G. (1999) A reassessment of the eels of the genus Bathycongrus in the Indo-west Pacific. Journal of Fish Biology, 54 (5), 973‒995.
Chen, J.T.F. & Weng, H.T.C. (1967) A review of the apodal fishes of Taiwan. Biological Bulletin Tunghai University Ichthyology Series, 6 (32), 135‒220.
Chen, Y.-Y. & Mok, H.-K. (2001) A new synaphobranchid eel, Dysomma longirostrum (Anguilliformes: Synaphobranchidae), from the northeastern coast of Taiwan. Zoological Studies, 40 (2), 79‒83.
Chiu, Y.-C., Shao, K.-T., Huang, S.-P. & Chen, H.-M. (2018) The freshwater snake eel genus Lamnostoma (Anguilliformes: Ophichthidae) in Taiwan, with description of a new species. Zootaxa, 4454 (1), 18‒32.
https://doi.org/10.11646/zootaxa.4454.1.4
Ebert, D.A., White, W.T., Ho, H.-C., Last, P.R., Nakaya, K., Séret, B., Straube, N., Naylor, G.J.P. & de Carvalho, M.R.C. (2013) An annotated checklist of the chondrichthyans of Taiwan. Zootaxa, 3752 (1), 279–386.
Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds). (2018) Catalog of Fishes: genera, species, references. (http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp). Electronic version accessed 01 May 2018.
Fowler, H.W. (1934) Descriptions of new fishes obtained 1907 to 1910, chiefly in the Philippine Islands and adjacent seas. Proceedings of the Academy of Natural Sciences of Philadelphia, 85, 233–367.
Froese, R. & Pauly, D. (Eds.) (2018) FishBase. World Wide Web electronic publication. Available from: http://www.fishbase.org (accessed May 2018)
Hibino, Y., Shibata, J.-Y. & Kimura, S. (2014) Description of a new snake eel, Apterichtus hatookai sp. nov. (Anguilliformes: Ophichthidae), from the Pacific coast of Japan. Ichthyological Research, 317–321, 1–5.
Ho, H.-C. (2016) New record of the finless eel Apterichtus hatookai from Taiwan (Anguilliformes: Ophichthidae: Ophichthinae). Platax, 13, 27‒31.
Ho, H.-C & Tighe, K.A. (2018) Three new species of the cutthroat eel genus Dysomma, with comments on the variation of D. taiwanense (Anguilliformes: Synaphobranchidae). Zootaxa, 4454 (1), 52‒67.
https://doi.org/10.11646/zootaxa.4454.1.7
Ho, H.-C, Hibino, Y. & Huang, J.-F. (2018a) Note on rare snake eels (Anguilliformes: Ophichthidae) and additional data on three Neenchelys recently described from Taiwan. Zootaxa, 4454 (1), 200‒214.
https://doi.org/10.11646/zootaxa.4454.1.16
Ho, H.-C, Hong, W.-C. & Chen, H.-M. (2018b) A new cutthroat eel of the genus Synaphobranchus (Anguilliformes: Synaphobranchidae) from Taiwan. Zootaxa, 4454 (1), 68‒77.
https://doi.org/10.11646/zootaxa.4454.1.8
Ho, H.-C., McCosker, J.E. & Smith, D.G. (2013) Revision of the worm eel genus Neenchelys (Ophichthidae; Myrophinae), with descriptions of three new species from the western Pacific Ocean. Zoological Studies, 52, 1‒20.
Ho, H.-C, Smith, D.G. & Huang, J.-F. (2018c) Notes on two rare conger eel species (Anguilliformes: Congridae) found in Taiwanese waters. Zootaxa, 0000 (0), 00‒00.
Ho, H.-C., Smith, D.G. & Tighe, K.A. (2015a) Review of the arrowtooth eel genera Dysomma and Dysommina in Taiwan, with the description of a new species (Anguilliformes: Synaphobranchidae: Ilyophinae). Zootaxa, 4060 (1), 86‒104.
Ho, H.-C., McCosker, J.E., Smith D.G. & Shao, K.-T. (2015b) Introduction to the systematics and biodiversity of eels (orders Anguilliformes and Saccopharyngiformes) of Taiwan. Zootaxa, 4060 (1), 5–18.
Ho, H.-C., Smith, D.G., McCosker, J.E., Hibino, Y., Loh, K.-H., Tighe, K.A., & Shao, K.-T. (2015c) Annotated checklist of eels (orders Anguilliformes and Saccopharyngiformes) from Taiwan. Zootaxa, 4060 (1), 140–189.
Huang, J.-F., Ho, H.-C., Chang, Y.-S., Smith, D.G. & Chen, H.-M. (2018) Two new species of the conger eel genus Bathycongrus (Anguilliformes: Congridae) from Taiwan. Zootaxa, 4454 (1), 107‒117.
https://doi.org/10.11646/zootaxa.4454.1.11
Huang, W.-C., Shiao, J.-C. & Liao, T.-Y. (2017) New record of the enigmatic moray Gymnothorax enigmaticus McCosker and Randall, 1982 (Anguilliformes: Muraenidae) from Taiwan. Platax, 14, 89‒95.
Jordan, D.S. & Snyder, J.O. (1901) A review of the apodal fishes or eels of Japan, with descriptions of nineteen new species. Proceedings of the United States National Museum, 23 (1239), 837–890.
Kanazawa, R.H. (1958) A revision of the eels of the genus Conger with descriptions of four new species. Proceedings of the United States National Museum, 108 (3400), 219–267,
Karmovskaya, E.S. (2015) New species of the genus Ariosoma, A. dolichopterum (Bathymyrinae), from the waters of Central Vietnam. Voprosy Ikhtiologii, 55 (6), 719–723. [In Russian. English translation in Journal of Ichthyology, 55 (6), 906–910.]
Karmovskaya, E.S. & Smith, D.G. (2008) Bathycongrus trimaculatus, a new congrid eel (Teleostei: Anguilliformes) from the southwestern Pacific, with a redescription of Bathycongrus bleekeri Fowler. Zootaxa, 1943, 26‒36.
Lin, J.-T. & Ho, H.-C. (2018) Morphological and molecular identification of the leptocephali of Taiwanese duckbill conger, Gavialiceps taiwanensis (Chen & Weng, 1967) (Family Congridae). Zootaxa, 4454 (1), 215‒227.
https://doi.org/10.11646/zootaxa.4454.1.17
Lin, J., Shao, K.-T., Smith, D.G. (2018) The eel genus Macrocephenchelys (Anguilliformes: Congridae) in Taiwan, with description of a new species. Zootaxa, 4454 (1), 186‒199.
https://doi.org/10.11646/zootaxa.4454.1.15
Liu, D., Tang, W. & Zhang, C. (2010) Ophichthus retrodorsalis sp. nov. In: Zhang, C. (Ed.), Fauna Sinica: Osteichthyes: Anguilliformes and Notacanthiformes. Science Press, Beijing, 332–333.
McCosker, J.E. (1972) Two new genera and two new species of western Pacific snake-eels (Apodes: Ophichthidae). Proceedings of the California Academy of Sciences (Series 4), 39 (10), 111–119.
McCosker, J.E. (1982) A new genus and two new species of remarkable Pacific worm eels (Ophichthidae, subfamily Myrophinae). Proceedings of the California Academy of Sciences (Series 4), 43 (5), 59–66.
McCosker, J.E. & Hibino, Y. (2015) A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species. Zootaxa, 3941 (1), 49‒78.
McCosker, J.E. & Randall, J.E. (1982) Synonymies of Indian Ocean eels, with the description of Gymnothorax enigmaticus, a moray previously known as G. ruppeli. Proceedings of the California Academy of Sciences (Series 4), 43 (2), 17–24.
Shao, K.-T., Ho, H.-C., Lin, P.-L., Lee, P.-F., Lee, M.-Y., Tsai, C.-Y., Liao, Y.-C. & Lin, Y.-C. (2008) A checklist of the fishes of southern Taiwan, Northern South China Sea. Raffles Bulletin of Zoology, Supplement 19, 233–271.
Shen, S.-C. (1998) A review of congrid eels of the genus Ariosoma from Taiwan, with description of a new species. Zoological Studies, 37 (1), 7‒12.
Smith, D.G. (2012) A checklist of the moray eels of the world (Teleostei: Anguilliformes: Muraenidae). Zootaxa, 3474, 1‒64.
Smith, D.G. (2018) A new genus and species of congrid eel from the Philippines (Anguillliformes: Congridae: Bathymyrinae). Zootaxa, 4454 (1), 78‒83.
https://doi.org/10.11646/zootaxa.4454.1.9
Smith, D.G. & Ho, H.-C. (2018a) The congrid eel genus Bathycongrus of Taiwan, with descriptions of three new species (Anguilliformes: Congridae). Zootaxa, 4454 (1), 118‒146.
https://doi.org/10.11646/zootaxa.4454.1.12
Smith, D.G. & Ho, H.-C. (2018b) Review of the congrid eel genus Conger (Anguilliformes: Congridae) in Taiwan. Zootaxa, 4454 (1), 168‒185.
https://doi.org/10.11646/zootaxa.4454.1.14
Smith, D.G. Hibino, Y. & Ho, H.-C. (2018a) Two new elongate unpatterned moray eels from Taiwan and Vietnam, with notes on two congeners (Anguilliformes: Muraenidae). Zootaxa, 4454 (1), 33‒42.
https://doi.org/10.11646/zootaxa.4454.1.5
Smith, D.G., Ho, H.-C., Sumod, K.S. (2018b) Redescription of Congrhynchus talabonoides Fowler, 1934 (Anguilliformes: Congridae) based on specimens collected from the Philippines, Taiwan and India. Zootaxa, 4454 (1), 228‒232.
https://doi.org/10.11646/zootaxa.4454.1.18
Smith, D.G. Ho, H.-C. & Tashiro, F. (2018c) Eels of the genus Bathyuroconger in the northwestern Pacific, with description of four new species (Anguilliformes: Congridae). Zootaxa, 4454 (1), 147‒167.
https://doi.org/10.11646/zootaxa.4454.1.13
Smith, D.G. & Ho, H.-C., Huang, J.-F. & Chang, Y.-S. (2018e)The congrid eel genus Ariosoma in Taiwan (Anguilliformes: Congridae), with description of a new species. Zootaxa, 4454 (1), 84‒106.
https://doi.org/10.11646/zootaxa.4454.1.10
Tighe, K.A., Ho, H.-C. & Hatooka, K. (2018) A new species of the genus Dysommina (Teleostei: Anguilliformes: Synaphobranchidae: Ilyophinae) from the Western Pacific. Zootaxa, 4454 (1), 43‒51.
https://doi.org/10.11646/zootaxa.4454.1.6
Weber, M. & de Beaufort, L.F. (1916) The Fishes of the Indo-Australian Archipelago. III. Ostariophysi: II Cyprinoidea, Apodes, Synbranchi. E. J. Brill, Leiden, 3, pp. 1–455.