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      ‘Henicorhynchus’ thaitui, a new species of cavefish from Central Vietnam (Teleostei, Cyprinidae)

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          Abstract

          ‘Henicorhynchus’ thaitui sp. nov. is described from a subterranean stream in a karst cave in Phong Nha Ke Bang National Park, Quang Binh Province, Central Vietnam. It differs from all congeners in having a pale pink body in life, smaller eyes with diameter less than the maxillary barbel length, and two pairs of barbels, the maxillary barbel being much longer than the rostral barbel.

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          Most cited references 33

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          The fishes of the inland waters of southeast Asia: a catalogue and core bibliography of the fishes known to occur in freshwaters, Mangroves and Estuaries

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            An account of the fishes found in the river Ganges and its branches /

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              Molecular phylogeny of the cyprinid tribe Labeonini (Teleostei: Cypriniformes).

              The cyprinid tribe Labeonini (sensuRainboth, 1991) is a large group of freshwater fishes containing around 40 genera and 400 species. They are characterized by an amazing diversity of modifications to their lips and associated structures. In this study, a total of 34 genera and 142 species of putative members of this tribe, which represent most of the generic diversity and more than one third of the species diversity of the group, were sampled and sequenced for four nuclear genes and five mitochondrial genes (totaling 9465bp). Phylogenetic relationships and subdivision of this tribe were investigated and the placement and status of most genera are discussed. Partitioned maximum likelihood analyses were performed based on the nuclear dataset, mitochondrial dataset, combined dataset, and the dataset for each nuclear gene. Inclusion of the genera Paracrossochilus, Barbichthys, Thynnichthys, and Linichthys in the Labeonini was either confirmed or proposed for the first time. None of the genera Labeo, Garra, Bangana, Cirrhinus, and Crossocheilus are monophyletic. Taxonomic revisions of some genera were made: the generic names Gymnostomus Heckel, 1843, Ageneiogarra Garman, 1912 and Gonorhynchus McClelland, 1839 were revalidated; Akrokolioplax Zhang and Kottelat, 2006 becomes a junior synonym of Gonorhynchus; the species Osteochilus nashii was found to be a member of the barbin genus Osteochilichthys. Five historical hypotheses on the classification of the Labeonini were tested and rejected. We proposed to subdivide the tribe, which is strongly supported as monophyletic, into four subtribes: Labeoina, Garraina, Osteochilina, and Semilabeoina. The taxa included in each subtribe were listed and those taxa that need taxonomic revision were discussed.
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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2020
                03 September 2020
                : 965
                : 85-101
                Affiliations
                [1 ] School of Life Science, Central China Normal University, Wuhan 430079, Hubei Province, China School of Life Science, Central China Normal University, Wuhan 430079, Hubei Province, China Central China Normal University Wuhan China
                [2 ] Institute of Hydrobiology, Chinese Academy of Sciences, No.7 Donghu South Road, Wuhan 430072, Hubei Province, China Chinese Academy of Sciences Wuhan China
                [3 ] Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, No. 18 Hoang Quoc Viet, Hanoi City, Vietnam Vietnam Academy of Science and Technology Hanoi Vietnam
                [4 ] Vinh University, 182 Le Duan street, Vinh city, Nghe An Province, Vietnam Vinh University Vinh Vietnam
                [5 ] Hong Duc University, 565 Quang Trung Street, Thanh Hoa City, Vietnam Hong Duc University Thanh Hoa Vietnam
                Author notes
                Corresponding author: E Zhang ( zhange@ 123456ihb.ac.cn )

                Academic editor: Sven Kullander

                Article
                52751
                10.3897/zookeys.965.52751
                7483327
                Dinh Tao Nguyen, Anh Tuan Ho, Ngoc Thao Hoang, Hua Wu, E Zhang

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Cyprinidae
                Systematics
                Asia

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