Glyphis siamensis Steindachner, 1896

Irrawaddy river shark



Taxonomy & Nomenclature

Synonym/s: Carcharias siamensis Steindachner, 1896 (original combination); Prionodon siamensis Steindachner, 1896


This species is a synonym of G. gangeticus (Li et al., 2015).


Conservation Status

Invalid (synonym)

Last recorded before 1896.

IUCN RedList status: Critically Endangered



Irrawaddy River, Myanmar





Known only from a single specimen (63cm TL) collected sometime during the 19th century, and housed in the Naturhistorishes Museum, Vienna.





Original description:

Steindachner, Franz. (1896). Bericht über die während der Reise Sr. Maj. Schiff "Aurora" von Dr. C. Ritter v. Microszewski in den Jahren 1895 und 1896, gesammelten Fische. Annalen des Naturhistorischen Museums in Wien [b]11[/b]: 197-230.


Other references:

Barnett, L. A. K., Quaranta, K. L., Ebert, D. A., White, W. T. & Compagno, L. J. V. (2008). Glyphis siamensis. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. ( Downloaded on 11 March 2011.

Compagno, L. J. V. (1988). Sharks of the order Carcharhiniformes. Princeton, New Jersey: Princeton University Press.

Li, Chenhong et al. (2015). DNA capture reveals transoceanic gene flow in endangered river sharks. PNAS 112(43): 13302-13307.

Roberts, T. R. (2005). Debunking the mythology of the so-called ‘freshwater shark of the Ganges’, Glyphis gangeticus (Elasmobranchii, Carcharhinidae). In 7th Indo-Pacific Fish Conference, Howard International Hotel, Taipei, Taiwan, 16-20 May
2005 (ed. S. Kwang-Tsao), p. 30. Academica Sinica, Taipei: Ichythological Society of Taiwan.


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