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Article
Published: 2021-08-05

Coloconger maculatus sp. nov., a species of short-tail eel from eastern Taiwan (Anguilliformes: Colocongridae)

National Museum of Marine Biology & Aquarium, Pingtung, Taiwan 2Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan 3Australian Museum, Sydney, Australia (Research Associate)
Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
Department and Graduate Institute of Aquaculture, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
Pisces Actinopterygii Elopomorpha taxonomy ichthyology

Abstract

A new species of Coloconger is described from a large female collected off eastern Taiwan. It can be distinguished from congeners by having a large black blotch on rear portion of tail; posterior end of tail white; and combination of characters: head small 15.7% TL; 4 supratemporal pores, middle 2 in pair; 7 supraorbital pores, 2 pores over posterior nostril; 12 or 14 infraorbital pores; 14 preoperculomandibular pores; 226 dorsal-fin rays and 122 anal-fin rays; preanal vertebrae 77 and total vertebrae 145; rictus through a vertical of posterior margin of pupil; snout shorter than eye diameter; distance between origins of pectoral and dorsal fins 69.4% pectoral-fin length; and body brownish gray dorsally, light gray ventrally, and dorsal fin dark gray. Data and variations of Coloconger japonicus found in Taiwan are provided and discussed.

 

References

  1. Alcock, A.W. (1889) Natural history notes from H. M. Indian marine survey steamer `Investigator,' Commander Alfred Carpenter, R. N., D. S. O., commanding. No. 13. On the bathybial fishes of the Bay of Bengal and neighbouring waters, obtained during the seasons 1885‒1889. Annals and Magazine of Natural History, Series 6, 4 (24), 450‒461. https://doi.org/10.1080/00222938909460563
    Böhlke, E.B. (1989) Methods and terminology. In Böhlke, E.B. (Ed.), Fishes of the Western North Atlantic. Memoirs of the Sears Foundation for Marine Research, 1 (9), 1–7.
    Castle, P.H.J. (1969) The eel genera Congrina and Coloconger off southern Mozambique and their larval forms. Special Publication, JLB Smith Institute of Ichthyology, 6, 1‒12.
    Chan, W.L. (1967) A new species of congrid eel from the South China Sea. Journal of Natural History, 1 (1), 97‒112. https://doi.org/10.1080/00222936700770661
    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
    Kanazawa, R.H. (1957) A new species of eel, Coloconger meadi, and new records for the ateleopid fish, Ijimaia antellarum Howell Rivero, both from the Gulf of Mexico. Copeia, 1957 (3), 234‒235. https://doi.org/10.2307/1439373
    Kanazawa, R.H. (1961) A new eel, Coloconger cadenati and a redescription of the heterocongrid eel, Taenioconger longissimus (Günther) both from the coast of Senegal. Bulletin de l'Institut Français d'Afrique Noire, Série A, Sciences Naturelles, 23 (1), 108‒115, pls. 1‒2.
    Karrer, C. (1982) Anguilliformes du canal de Mozambique (Pisces, Teleostei). In: Collection Faunae Tropicale. No. XXIII. Office de la recherche scientifique et technique outre-mer, Paris, 115 pp.
    López, J.A., Westneat, M.W. & Hanel, R. (2007) The phylogenetic affinities of the mysterious anguilliform genera Coloconger and Thalassenchelys as supported by mtDNA sequences. Copeia, 2007 (4), 959– 966. https://doi.org/10.1643/0045-8511(2007)7[959:TPAOTM]2.0.CO;2
    Okamura, O. & Kitajima, T. (Eds.) (1984) Fishes of the Okinawa Trough and the adjacent waters. Vol. I. The intensive research of unexploited fishery resources on continental slopes. Japan Fisheries Resource Conservation Association, Tokyo, 414 pp.
    Quéro, J.-C. (2001) Colocongridae (Pisces: Anguilliformes) de Nouvelle‒Calédonie (Pacifique sud-ouest). Description de Coloconger saldanhai sp. n. Boletim do Museu Municipal do Funchal, Supplement 6, 53‒64.
    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.
    da Silva, J.P.C.B., Datovo, A. & Johnson, G.D. (2019) Phylogenetic interrelationships of the eel families Derichthyidae and Colocongridae (Elopomorpha: Anguilliformes) based on the pectoral skeleton. Journal of Morphology, 280, 934–947. https://doi.org/10.1002/jmor.20991
    Smith, D.G. (1989) Family Colocongridae. In Böhlke, E.B. (Ed.), Orders Anguilliformes and Saccopharyngiformes. Memoirs of the Sears Foundation for Marine Research, 1 (9), pp. 413–419. https://doi.org/10.2307/j.ctvbcd0dm.14
    Smith, D.G. (1999) Elopidae, Megalopidae, and most eel families. In: Carpenter, K.E. & Niem, V.H. (Eds.), 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). Vol. 3. Food and Agriculture Organization of the United Nations, Rome, pp. 1398‒2068.
    Tang, K.L. & Fielitz, C. (2013) Phylogeny of moray eels (Anguilliformes: Muraenidae), with a revised classification of true eels (Teleostei: Elopomorpha: Anguilliformes). Mitochondrial DNA, 24, 55–66. https://doi.org/10.3109/19401736.2012.710226

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