(Hamilton, 1822) 
Bagarius bagarius, also known as the devil catfish, dwarf goonch or goonch (Bengali: বাঘাইর), is a species of catfish in the genus Bagarius. It is generally reported as being found in large and medium rivers in South and Southeast Asia, but considerable taxonomic confusion surrounds this species and B. yarrelli.
At present the standard is to recognise two species of Bagarius from the Indian Subcontinent: First B. bagarius, supposedly a small species (up to 20 cm or 7.9 in) first described in 1822 by Francis Buchanan-Hamilton based on a specimen from the Ganges River. The second is B. yarrelli, supposedly a very large species (up to 2 m or 6.6 ft) first described in 1839 by William Henry Sykes based on a specimen from the Mula-Mutha River. Recent studies have not been able to document that more than one species exists in the Indian subcontinent, which, if confirmed, would mean that the name B. bagarius is a senior synonym of B. yarrelli. In contrast, Southeast Asian populations typically included in B. bagarius likely represents a separate species.
B. bagarius is the only member of the genus even marginally suitable for home aquaria. It requires cool, fast-flowing water, and eats bloodworms, shrimp and live or dead fish. Reports exist of very anti-social behaviour by these fish in captivity.
- Ng, H.H. (2010). "Bagarius bagarius". IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature. Retrieved 22 January 2012.
- Bagarius Bleeker, 1853
- Froese, Rainer and Pauly, Daniel, eds. (2012). "Bagarius bagarius" in FishBase. January 2012 version.
- Ng, H.H. (2010). "Bagarius yarrelli". IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature. Retrieved 22 January 2012.
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5. 'Giant Baghair caught in Jamuna' in The Daily Star (Bangladesh), May 12, 2009]
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