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Issue: Vol. 5665 No. 2: 22 Jul. 2025
Type: Article
Published: 2025-07-22
DOI: 10.11646/zootaxa.5665.2.9
Page range: 281-294
Abstract views: 124
PDF downloaded: 6

Discogobio angustimarginis, a new species of cyprinid fish (Pisces: Teleostei) from the Jinsha-Jiang River in Yunnan Province, southwestern China

Institute of Hydrobiology; Chinese Academy of Sciences; Wuhan 430072; Hubei Province; China
The Changjiang Civilization Museum (Wuhan Natural History Museum); Wuhan 430010; China; Hubei Key Laboratory of Environment and Culture in Yangtze Regions; Wuhan 430010; China
Institute of Hydrobiology; Chinese Academy of Sciences; Wuhan 430072; Hubei Province; China
Pisces Taxonomy fish new taxa morphology sequence divergence

Abstract

A new species of cyprinid fish, Discogobio angustimarginis, is described from the mainstream of the Jinsha-Jiang River (upper Yangtze River basin) in Yunnan Province, Southwest China. This taxon is assigned to a specific species group within the genus Discogobio based on a suite of diagnostic morphological traits, including a large mental adhesive disc with its posterior margin extending to or beyond the vertical through the anterior margin of the eye, and a snout covered with small tubercles. The adhesive disc of D. angustimarginis is distinguished by a flat, sparsely papillated central fleshy pad and a narrower, non-papillated posterior margin (less than one-third the length of the central pad), setting it apart from the five other species in this group. Key differentiating characters include abdominal squamation, interorbital width, mental adhesive disc size, body depth, and lateral-line scale count. Additionally, taxonomic revisions suggest D. yunnanensis may represent a cryptic species complex, with its distribution strictly limited to the Dianchi Lake system. Phylogenetic analysis using the cytochrome b gene supports the validity of D. angustimarginis as a distinct lineage, highlighting its evolutionary significance within the genus and its ecological context in the Jinsha-Jiang River basin.

 

References

  1. Burland, T.G. (2000) DNASTAR’s Lasergene sequence analysis software. In: Misener, S. & Krawetz, S.A. (Eds.), Bioinformatics Methods and Protocols. Vol. 132. Methods in Molecular Biology. Humana Press, Totowa, New Jersey, pp. 71–91. https://doi.org/10.1385/1-59259-192-2:71
  2. Cao, L., Shao, W., Yi, W. & Zhang, E. (2023) A review of conservation status of freshwater fish diversity in China. Journal of Fish Biology, 104 (2), 345–364. https://doi.org/10.1111/jfb.15606
  3. Chen, X.Y. (2013) Checklist of Fishes of Yunnan. Zoological Research, 34 (4), 281–343. [in Chinese]
  4. Chen, Z., Yang, J. & Yang, J.X. (2012) Description of a new species of the genus Yunnanilus Nichols, 1925 (Teleostei: Nemacheilidae) from Yunnan, China. Zootaxa, 3269 (1), 57–64. https://doi.org/10.11646/zootaxa.3269.1.5
  5. Chu, X.L. & Chen, Y.R. (1989) The fishes of Yunnan, China, Part I. Science Press, Beijing, 377 pp. [in Chinese]
  6. Chu, X.L., Cui, G.H. & Zhou, W. (1993) A taxonomic revision of fishes of the genus Discogobio, with description of two new species. Acta Zootaxonomica Sinica, 18, 237–246. [in Chinese]
  7. Darriba, D., Taboada, G.L., Doallo, R. & Posada, D. (2012) jModelTest 2: more models, new heuristics and parallel computing. Nature Methods, 9, 772. https://doi.org/10.1038/nmeth.2109
  8. Ding, R.H. (1994) The Fishes of Sichuan, China. Sichuan Science and Technology Press, Chengdu, 641 pp. [in Chinese]
  9. Guo, Y.S., Sun, Z.Y., He, X.H., Jin, W. & Chen, Y.L. (2021) Coloured atlas of fishes in Sichuan. Science Press, Beijing, 475 pp. [in Chinese]
  10. He, C.L., Song, Z.B. & Zhang, E. (2012) Triplophysa pseudostenura, a new nemacheiline loach (Cypriniformes: Balitoridae) from the Yalong River of China. Zootaxa, 3586 (1), 272–280. https://doi.org/10.11646/zootaxa.3586.1.26
  11. Katoh, K. & Standley, D.M. (2013) MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Molecular Biology and Evolution, 30, 772–780. https://doi.org/10.1093/molbev/mst010
  12. Kumar, S., Stecher, G. & Tamura, K. (2016) MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets. Molecular Biology and Evolution, 33, 1870–1874. https://doi.org/10.1093/molbev/msw054
  13. Kottelat, M. (2001) Fishes of Laos. Wildlife Heritage Trust Publications, Colombo, 198 pp.
  14. Kottelat, M. (2013) 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. Raffles Bulletin of Zoology Supplement, No.27, 1–663.
  15. Li, X., Dao, W. & Zhou, W. (2020) Type locality and species identity of Pareuchiloglanis sinensis (Hora & Silas), with a description of a new species of the genus from the upper Yangtze River basin in southern China. Journal of Fish Biology, 97 (3), 827–844. https://doi.org/10.1111/jfb.14356
  16. Librado, P. & Rozas, J. (2009) DnaSP v5: a software for comprehensive analysis of DNA polymorphism data. Bioinformatics, 25 (11), 1451–1452. https://doi.org/10.1093/bioinformatics/btp187
  17. Lin, S.Y. (1931) Carps and carp-like fishes of Kwangtung and adjacent inlands. Fishery Experimental Station, Bureau of Reconstruction, Kwangtung, 167 pp.
  18. Menon, A.G.K. (1964) Monograph of the cyprinid fishes of the genus Garra Hamilton. Memoirs of the Indian Museum, 14, 173–260.
  19. Nguyen, V.H. & Ngo, S.V. (2001) Freshwater Fishes of Vietnam. Agriculture Publishing House, Hanoi, 622 pp. [in Vietnamese]
  20. Regan, C.T. (1908) Descriptions of three new cyprinoid fishes from Yunnan, collected by Mr. John Graham. Annals and Magazine of Natural History, Series 8, 2 (10), 356–357. https://doi.org/10.1080/00222930808692492
  21. Ronquist, F., Teslenko, M., van der Mark, P., Ayres, D.L., Darling, A., Höhna, S., Larget, B., Liu, L., Suchard, M.A. & Huelsenbeck, J.P. (2012) MrBayes 3.2: efficient Bayesian phylogenetic inference and model choice across a large model space. Systematic Biology, 61, 539–542. https://doi.org/10.1093/sysbio/sys029
  22. Sun, Z.W., Ren, S.J. & Zhang, E. (2013) Liobagrus chenghaiensis, a new species of catfish (Siluriformes: Amblycipitidae) from Yunnan, South China. Ichthyological Exploration of Freshwaters, 23 (4), 375–384.
  23. Tang, K.L., Agnew, M.K., Hirt, M.V., Sado, T., Schneider, L.M., Freyhof, J., Sulaiman, Z., Swartz, E., Vidthayanon, C., Miya, M., Saitoh, K., Simons, A.M., Wood, R.M. & Mayden, R.L. (2010) Systematics of the subfamily Danioninae (Teleostei: Cypriniformes: Cyprinidae). Molecular Phylogenetics and Evolution, 57, 189–214. https://doi.org/10.1016/j.ympev.2010.05.007
  24. Tian, S.K., Wang, Y.F., Chen, X.Y. & Shi, Y.L. (2022) Illustrated Fishes of Yunnan Province. Yunnan Scientific Press, Kunming, 683 pp. [in Chinese]
  25. Wu, H.W. (1982) The cyprinid fishes of China. Part 2. Shanghai Science and Technology Press, Shanghai, 598 pp. [in Chinese]
  26. Wu, J. & Wu, M.S. (1990) The fish fauna of Jinsha-Jiang. Sichuan Journal of Zoology, 9, 23–26. [in Chinese]
  27. Wu, L. (1989) The Fishes of Guizhou, China. Guiyang People's Publishing House, Guiyang, 314 pp. [in Chinese]
  28. Wu, Y.Y., Sun, Z.Y. & Guo, Y.S. (2016) A new species of the genus Triplophysa (Cypriniformes: Nemacheilidae), Triplophysa daochengensis, from Sichuan Province, China. Zoological Research, 37 (4), 290–296.
  29. Xiao, S. & Lan, J.H. (2023) A photographic atlas of freshwater fishes from Guangxi. Henan Science and Technology Press, Zhengzhou, 426 pp. [in Chinese]
  30. Yang, G.R. (1987) The Fishes of Hubei, China. Hubei Science and Technology Press, Wuhan, 242 pp. [in Chinese]
  31. Yang, L. & Mayden, R.L. (2010) Phylogenetic relationships, subdivision, and biogeography of the Cyprinid tribe Labeonini (sensu Rainboth, 1991) (Teleostei: Cypriniformes), with comments on the implications of lips and associated structures in the labeonin classification. Molecular Phylogenetics and Evolution, 54, 254–265. https://doi.org/10.1016/j.ympev.2009.09.027
  32. Yue, P.Q. (2000) Fauna Sinica (Osteichthyes: Cypriniformes. Vol. III). Science Press, Beijing, 661 pp. [in Chinese]
  33. Zhang, C.G., Yang, J.X., Zhao, Y.H. & Pan, X.F. (Eds.) (2019) Fishes in the Jinsha Jiang River Basin, the Upper Reaches of the Yangtze River, China. Science Press, Beijing, 567 pp. [in Chinese]
  34. Zheng, C.Y. (1989) The Fishes of the Pearl River. Science Press, Beijing, 438 pp. [in Chinese]
  35. Zheng, L.P. & Zhou, W. (2008) Revision of the cyprinid genus Discogobio Lin, 1931 (Pisces: Teleostei) from the upper Red River basin in Wenshan Prefecture, Yunnan, China, with descriptions of three new species. Environmental Biology of Fishes, 81, 255–266. https://doi.org/10.1007/s10641-007-9196-7
  36. Zhou, W., Pan, X.F. & Kottelat, M. (2005) Species of Garra and Discogobio (Teleostei: Cyprinidae) in Yuanjiang (Upper Red River) Drainage of Yunnan Province, China with Description of a New Species. Zoological Studies, 44, 445–453.
  37. Zhou, W., Li, X. & Thomson, A.W. (2011) Two new species of the Glyptosternine catfish genus Euchiloglanis (Teleostei: Sisoridae) from southwest China with redescriptions of E. davidi and E. kishinouyei. Zootaxa, 2871 (1), 1–18. https://doi.org/10.11646/zootaxa.2871.1.1

How to Cite

Yi, W.-J., Deng, S.-Q. & Zhang, E. (2025) Discogobio angustimarginis, a new species of cyprinid fish (Pisces: Teleostei) from the Jinsha-Jiang River in Yunnan Province, southwestern China. Zootaxa, 5665 (2), 281–294. https://doi.org/10.11646/zootaxa.5665.2.9