Abstract
Two new species of the fish genus Garra (Cypriniformes: Cyprinidae) are described from the lower Yarlung Tsangpo River drainage in southeastern Tibet, China. Garra motuoensis, a member of the proboscis species group, is primarily distinguished from the members of this group by having a prominent, quadrate, and slightly bilobed proboscis; 6–20 small to middle-sized unicuspid tubercles on the anterior region of the proboscis, some middle-sized unicuspid tubercles on the transverse lobe of the snout, and several small unicuspid tubercles on the lateral surface of snout; the anus situated slightly closer to the anal-fin origin than to the pelvic-fin origin (distance from anus to anal fin 36–46% of pelvic-anal distance); 36–37 lateral-line scales; and 12 circumpeduncular scales. Garra yajiangensis, a member of the proboscis species group, is primarily distinguished from the members of this group by having a prominent, quadrate, and slightly bilobed proboscis, covered with 2–7 middle-sized unicuspid tubercles, including two large-sized tubercles on anterior margin of each lobe; some small unicuspid tubercles on the transverse lobe and the lateral surface of snout; the anus situated substantially closer to the anal-fin origin than to the pelvic-fin origin (distance from anus to anal fin 19–24% of pelvic-anal distance); 34–36 lateral-line scales; and 12 circumpeduncular scales. The validities of these two new species were also corroborated by molecular phylogenetic analysis based on Cyt b gene sequences.
References
Arunachalam, M., Nandagopal, S. & Mayden, R.L. (2013) Morphological diagnoses of Garra (Cypriniformes: Cyprinidae) from northeastern India with four new species description from Brahmaputra River. Journal of Fisheries and Aquaculture, 4 (3), 121–138.
Chen, Z.-M., Zhao, S. & Yang, J.-X. (2009) A new species of the genus Garra from Nujiang River Basin, Yunnan, China (Teleostei: Cyprinidae). Zoological Research, 30 (4), 438–444.
https://doi.org/10.3724/sp.j.1141.2009.04438
Chu, X.-L. & Cui, G.-H. (1987) Taxonomic revision of Chinese cyprinid fishes of the genus Garra Hamilton. Acta Zootaxonomica Sinica, 12 (1), 93–100. [In Chinese, English summary].
Darriba, D., Taboada, G.L., Doallo, R. & Posada, D. (2012) jModelTest 2: more models, new heuristics and parallel computing. Nature Methods, 9 (8), 772.
https://doi.org/10.1038/nmeth.2109Deng, S.-Q., Cao, L. & Zhang, E. (2018) Garra dengba, a new species of cyprinid fish (Pisces: Teleostei) from eastern Tibet, China. Zootaxa, 4476 (1), 94–108.
https://doi.org/10.11646/zootaxa.4476.1.9Doadrio, I., Carmona, J.A. & Machordom, A. (2002) Haplotype diversity and phylogenetic relationships among the Iberian Barbels (Barbus, Cyprinidae) reveal two evolutionary lineages. Journal of Heredity, 93 (2), 140–147.
https://doi.org/10.1093/jhered/93.2.140Galtier, N., Gouy, M. & Gautier, C. (1996) SEAVIEW and PHYLO–WIN: two graphic tools for sequence alignment and molecular phylogeny. Computer Applications in the Biosciences, 12 (6), 543–548.
https://doi.org/10.1093/bioinformatics/12.6.543Gurumayum, S.D. & Kosygin, L. (2016) Garra tamangi, a new species of cyprinid fish (Teleostei: Cypriniformes) from Arunachal Pradesh, northeastern India. Species, 17 (55), 84–93.
Huelsenbeck, J.P. & Ronquist, F. (2001) MrBayes: Bayesian inference of phylogenetic trees. Bioinformatics, 17 (8), 754–755.
https://doi.org/10.1093/bioinformatics/17.8.754Kullander, S.O. & Fang, F. (2004) Seven new species of Garra (Cyprinidae: Cyprininae) from Rakhine Yoma, southern Myanmar. Ichthyological Exploration of Freshwaters, 15 (3), 257–278.
McClelland, J. (1838) Observations on six new species of Cyprinidae with an outline of a new classification of the family. Journal of Asiatic Society of Bengal, 7, 941–948.
Menon, A.G.K. (1964) Monograph of the cyprinid fishes of the genus Garra Hamilton. Memoirs of the Indian Museum, 14 (4), 173–260.
Nebeshwar, K., Bagra, K. & Das, D.N. (2012) Garra kalpangi, a new cyprinid fish species (Pisces: Teleostei) from upper Brahmaputra basin in Arunachal Pradesh, India. Journal of Threatened Taxa, 4 (2), 2353–2362.
https://doi.org/10.11609/JoTT.o1703.2353-62Nebeshwar, K. & Vishwanath, W. (2013) Three new species of Garra (Pisces: Cyprinidae) from north-eastern India and redescription of G. gotyla. Ichthyological Exploration of Freshwaters, 24 (2), 97–120.
Nebeshwar, K. & Vishwanath, W. (2017) On the snout and oromandibular morphology of genus Garra, description of two new species from the Koladyne River basin in Mizoram, India, and redescription of G. manipurensis (Teleostei: Cyprinidae). Ichthyological Exploration of Freshwaters, 28 (1), 17–53.
Premananda, N., Kosygin, L. & Saidullah, B. (2017) Garra chindwinensis, a new species of cyprinid fish (Teleostei: Cypriniformes) from Manipur, Northeastern India. Records of the Zoological Survey of India, 117 (3), 191–197.
https://doi.org/10.26515/rzsi/v117/i3/2017/120968Roni, N., Sarbojit, T. & Vishwanath, W. (2017) Garra clavirostris, a new cyprinid fish (Teleostei: Cyprinidae: Labeoninae) from the Brahmaputra drainage, India. Zootaxa, 4244 (3), 367–376.
https://doi.org/10.11646/zootaxa.4244.3.5Roni, N. & Vishwanath, W. (2017) Garra biloborostris, a new labeonine species from north-eastern India (Teleostei: Cyprinidae). Vertebrate Zoology, 67 (2), 133–137.
Roni, N. & Vishwanath, W. (2018) A new species of the genus Garra (Teleostei: Cyprinidae) from the Barak River drainage, Manipur, India. Zootaxa, 4374 (2), 263–272.
https://doi.org/10.11646/zootaxa.4374.2.6Shangningam, B.D. & Vishwanath, W. (2015) Two new species of Garra from the Chindwin basin, India (Teleostei: Cyprinidae). Ichthyolological Exploration of Freshwaters, 26 (3), 263–272.
Stamatakis, A. (2014) RAxML Version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies. Bioinformatics, 30 (9), 1312–1313.
https://doi.org/10.1093/bioinformatics/btu033Sun, C., Li, X., Zhou, W. & Li, F. (2018) A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species. Zootaxa, 4378 (1), 049–070.
https://doi.org/10.11646/zootaxa.4378.1.3Talwar, P.K. & Jhingran, A.G. (1991) Inland fishes of India and adjacent Countries. Oxford & IBH Publishing Co., New Delhi, 541 pp.
Tamura, K., Stecher, G., Peterson, D., Filipski, A. & Kumar, S. (2013) MEGA6: molecular evolutionary genetics analysis version 6.0. Molecular Biology and Evolution, 30 (12), 2725–2729.
https://doi.org/10.1093/molbev/mst197Tang, Q., Freyhof, J., Xiong, B. & Liu, H. (2008) Multiple invasions of Europe by East Asian cobitid loaches (Teleostei: Cobitidae). Hydrobiologia, 605 (1), 17–28.
https://doi.org/10.1007/s10750-008-9296-1Thompson, J.D., Gibson, T.J., Plewniak, F., Jeanmougin, F. & Higgins, D.J. (1997) The Clustal X windows interface: flexible strategies for multiple sequences alignment aided by quality analysis tools. Nucleic Acids Research, 25 (25), 4876–4882.
https://doi.org/10.1093/nar/25.24.4876Thoni, R.J., Gurung, D.B. & Mayden, R.L. (2016) A review of the genus Garra Hamilton 1822 of Bhutan, including the descriptions of two new species and three additional records (Cypriniformes: Cyprinidae). Zootaxa, 4169 (1), 115–132.
https://doi.org/10.11646/zootaxa.4169.1.5