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Environmental Biology of Fishes

, Volume 20, Issue 3, pp 161–167 | Cite as

Dasyatis laosensis, a new whiptailed stingray (family Dasyatidae), from the Mekong River of Laos and Thailand

  • Tyson R. Roberts
  • Jaranthada Karnasuta
Article

Synopsis

Dasyatis laosensis, a new species, is described from the Mekong River where it forms the border between Laos and Thailand. It is the first member of the genus Dasyatis to be described as an endemic freshwater species from Southeast Asia. Bright orange color on the ventral surface of the disc and similar meristic characters indicate that it may be closely related to Dasyatis akajei, a marine species from southern Japan and China, and to Dasyatis sp. undetermined, from the West River in Guangxi, southern China.

Key words

Freshwater elasmobranchs Southeast Asia China West River Dasyatis akajei 

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References

  1. Cheng, P.S. (ed.). 1981. The fishes of Guangxi. Guangxi People's Publisher, Nanning, 257 pp. (in Chinese).Google Scholar
  2. Compagno, L.J.V. & T.R. Roberts. 1982. Freshwater stingrays (Dasyatidae) of Southeast Asia, with description of a new species of Himantura and reports of unidentified species. Env. Biol. Fish. 7: 321–339.Google Scholar
  3. Compagno, L.J.V. & T.R. Roberts. 1984. Marine and freshwater stingrays (Dasyatidae) of West Africa, with description of a new species. Proc. California Acad. Sci. 43: 283–300.Google Scholar
  4. Taki, Y. 1968. Notes on a collection of fishes from lowland Laos. U.S. Agency Internat. Dev. 47 pp.Google Scholar
  5. Taki, Y. 1974. Fishes of the Lao Mekong basin. U.S. Agency Internat. Dev., Miss. Laos, Agric. Div. 232 pp.Google Scholar

Copyright information

© Dr W. Junk Publishers 1987

Authors and Affiliations

  • Tyson R. Roberts
    • 1
  • Jaranthada Karnasuta
    • 1
  1. 1.Department of IchthyologyCalifornia Academy of SciencesSan FranciscoU.S.A.

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