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Introduction to the systematics and biodiversity of eels (orders Anguilliformes and Saccopharyngiformes) of Taiwan



The eel fauna (orders Anguilliformes and Saccopharyngiformes) of Taiwan is one of the richest in the world. Recent genetic and morphological studies have improved the taxonomic resolution and increased the known diversity of the eels of Taiwan, and the overall diversity is comparable to that of adjacent marine zoogeographic regions with rich biodiversity, such as Australia and the Philippines. In this special issue, we verified the historical records and examined numerous recently collected specimens, and conclude that the eel fauna of Taiwan is represented by 207 species in 75 genera and 14 families, with several undescribed species still likely to be discovered. The Muraenidae (71 species), Ophichthidae (60), Congridae (29) and Synaphobranchidae (17) are the most abundant and species-rich in Taiwanese waters. We add 42 species to the Taiwanese fish fauna, including one new genus and 13 new species. Two further species are newly described, one from the Philippines and one from Indonesia.



Pisces, Biodiversity, Anguilliformes, systematics, Taiwan

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Allen, G.R. (1979) Butterfly and angelfishes of the world. Vol. 2. John Wiley & Sons, New York, 352 pp.

Chen, C.H. (2004) Checklist of fishes of Penghu. Special publication of Fisheries Research Institute, 4, 1–175.

Chen, H.-M. & Loh, K.-H. (2007) Gymnothorax shaoi, a new species of moray eel (Anguilliformes, Muraenidae) from southeastern Taiwan. Journal of Marine Science and Technology, 15, 76–81.

Chen, H.-M. & Shao, K.-T. (1995) New eel genus, Cirrimaxilla, and description of the type species, Cirrimaxilla formosa (Pisces, Muraenidae) from southern Taiwan. Bulletin of Marine Science, 57, 328–332.

Chen, H.-M., Loh, K.-H. & Shao, K.-T. (2008) A new species of moray eel, Gymnothorax taiwanensis, (Anguilliformes, Muraenidae) from eastern Taiwan. The Raffles Bulletin of Zoology, 19 (Supplement), 131–134.

Chen, H.-M., Shao, K.-T. & Chen, C.-T. (1994) A review of the muraenid eels (family Muraenidae) from Taiwan with descriptions of twelve new records. Zoological Studies, 33 (1), 44–64.

Chen, H.-M., Shao, K.-T. & Chen, C.-T. (1996) A new moray eel, Gymnothorax niphostigmus, (Anguilliformes, Muraenidae) from northern and eastern Taiwan. Zoological Studies, 35, 20–24.

Chen, J.T.-F. (1954) Fishes of Taiwan. Journal of Taiwan Studies, 27, 1–126. [in Chinese]

Chen, J.T.-F. (1956) A synopsis of the vertebrates of Taiwan. Kaiming Press, Taipei, 292 pp. [in Chinese]

Chen, J.T.-F. (1969) A synopsis of the vertebrates of Taiwan. Vol. 1.Commercial Books Co., Taipei, 548 pp. [in Chinese]

Chen, J.T.-F. & Weng, H.T.-C. (1967) A review of the apodal fishes of Taiwan. Biological Bulletin of Tunghai University, Ichthyology Series, 6, 1–86.

Chen, J.T.-F. & Yu, M.-J. (1986) A synopsis of the vertebrates of Taiwan, revised and enlarged edition. Commercial Press, Taipei, 1092 pp. [in Chinese]

Chen, Y.-Y. & Mok, H.-K. (1995) Dysomma opisthoproctus, a new synaphobranchid eel (Pisces, Synaphobranchidae) from the northeastern coast of Taiwan. Copeia, 1995, 927–931.

Chen, Y.-Y. & Mok, H.-K. (2001) A new synaphobranchid eel, Dysomma longirostrum (Anguilliformes, Synaphobranchidae), from the northeastern coast of Taiwan. Zoological Studies, 40, 79–83.

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. (Ed.) (2015) Catalog of Fishes. Available from: (accessed 1 July 2015)

Eschmeyer, W.N. & Fong, J.D. (2015) Species by family/subfamily. Available from: (accessed 1 July 2015)

Froese, R. & Pauly, D. (Eds.) (2015) FishBase. World Wide Web electronic publication. Available from: (accessed 1 April 2015)

Günther, A. (1870) Catalogue of the Physostomi, containing the families Gymnotidae, Symbranchidae, Muraenidae, Pegasidae, and of the Lophobranchii, Plectognathi, Dipnoi, Ganoidei, Chondropterygii, Cyclostomata, Leptocardii, in the British Museum. Catalogue of the fishes in the British Museum, 8, 1–549.

Hibino, Y., Satapoomin, U. & Kimura, S. (2015) A new species of Neenchelys (Anguilliformes: Ophichthidae: Myrophinae) from the eastern Indian Ocean. Zootaxa, 4060 (1), 56–61.

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., McCosker, J.E., Hibino, Y., Loh, K.-H., Tighe, K. & Shao, K.-T. (2015a) Annotated checklist of eels (orders Anguilliformes and Saccopharyngiformes) from Taiwan. Zootaxa, 4060 (1), 140–189.

Ho, H.-C., McCosker, J.E. & Smith, D.G. (2015b) Renaming of three recently described eels of the genus Neenchelys (Teleostei: Anguilliformes: Ophichthidae) from the western Pacific. Zootaxa, 4060 (1), 49–51.

Ho, H.-C., Smith, D.G., Wang, S.-I., Shao, K.-T., Ju, Y.-M. & Chang, C.-W. (2010) Specimen catalog of Pisces collection of National Museum of Marine Biology and Aquarium transferred from Tinghai University and Aquarium. (II) Order Anguilliformes. Platax, 7, 13–34.

Jordan, D.S. & Evermann, B.W. (1902) Notes on a collection of fishes from the island of Formosa. Proceedings of the United States National Museum, 25, 315–368.

Jordan, D.S. & Richardson, R.E. (1909) A catalogue of the fishes of the island of Formosa, or Taiwan, based on the collections of Dr. Hans Sauter. Memoirs of the Carnegie Museum, 4, 159–204.

Loh, K.-H., Shao, K.-T. & Chen, H.-M. (2011) Gymnothorax melanosomatus, a new morey eel (Teleostei: Anguilliformes: Muraenidae) from southeastern Taiwan. Zootaxa, 3134, 43–52.

Loh, K.-H., Chen, I.-S., Randall, J.E. & Chen, H.-M. (2008) A review and molecular phylogeny of the moray eel subfamily Uropterygiinae (Anguilliformes: Muraenidae) from Taiwan, with description of a new species. Raffles Bulletin of Zoology, 19 (Supplement), 135–150.

Loh, K.-H., Shao, K.-T., Chong, V.-C. & Chen, H.-M. (2015) Additions to the Taiwan eel fauna with five newly recorded species of moray eels (Anguilliformes: Muraenidae), and redescription of Gymnothorax sagmacephalus. Journal of Marine Science and Technology, in press.

Loh, K.-H., Shao, K.-T., Ho, H.-C., Lim, P.-E. & Chen, H.-M. (2015) A new species of moray eel (Anguilliformes: Muraenidae) from Taiwan, with comments on related elongate unpatterned species, Zootaxa, 4060 (1), 30–40.

McCosker, J.E. & Chen, Y.-Y. (2000) A new species of deepwater snake-eel, Ophichthus aphotistos, with comments on Neenchelys retropinna (Anguilliformes, Ophichthidae) from Taiwan. Ichthyological Research, 47, 353–357.

McCosker, J.E. & Randall, J.E. (1993) Finless snake-eels of the genus Cirricaecula (Anguilliformes, Ophichthidae), with the description of C. macdowelli from Taiwan. Japanese Journal of Ichthyology, 40, 189–192.

McCosker, J.E. & Randall, J.E. (2001) Revision of the snake-eel genus Brachysomophis (Anguilliformes, Ophichthidae), with description of two new species and comments on the species of Mystriophis. Indo-Pacific Fishes, 33, 1–32.

McCosker, J.E., Chen, W.-L. & Chen, H.-M. (2009) Comments on the snake-eel genus Xyrias (Anguilliformes: Ophichthidae) with the description of a new species. Zootaxa, 2289, 61–67.

McCosker, J.E., Loh, K.-H., Lin, J. & Chen, H.-M. (2012) Pylorobranchus hoi, a new genus and species of myrophine worm-eel from Taiwan (Anguilliformes: Ophichthidae). Zoological Studies, 51 (7), 1188–1194.

Mok, H.-K., Lee, C.-Y. & Chan, H.-J. (1991) Meadia roseni, a new synaphobranchid eel from the coast of Taiwan (Anguilloidea, Synaphobranchidae). Bulletin of Marine Science, 48, 39–45.

Nakabo, T. (2013) Fishes of Japan, with picture key to species. Third edition. Volume 1. Tokai University Press, Hadano, 864 pp.

Sasaki, K. & Amaoka, K. (1991) Gymnothorax prolatus, a new moray from Taiwan. Japanese Journal of Ichthyology, 38 (1), 7–10.

Shao, K.-T. (1990) Garden eels from Taiwan, with description of a new species. Uo (Japanese Society of Ichthyology), 40, 1–16.

Shao, K.-T. (2015) Taiwan Fish Database. Available from: (accessed 1 July 2015)

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, 19 (Supplement), 233–271.

Shen, S.-C. (1984a) Synopsis of fishes of Taiwan. Southern Materials Center, Taipei, Taiwan, 533 pp.

Shen, S.-C. (1984b) Coastal fishes of Taiwan. National Taiwan Museum, Taipei, Taiwan, 189 pp.

Shen, S.-C., Lee, S.-C., Shao, K.-T., Mok, H.-K., Chen, C.-T. & Chen, C.-H. (1993) Fishes of Taiwan. Department of Zoology, National Taiwan University, Taipei, 960 pp.

Tanaka, S. (1911) Figures and descriptions of the fishes of Japan, including Riukiu Islands, Bonin Islands, Formosa, Kurile Islands, Korea and southern Sakhalin. Vol. 2. Tokyo Printing Co., Tokyo, 16 pp. [pp. 19–34]


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A founding journal of Biotaxa