Wallago is a genus of catfishes (order Siluriformes) of the family Siluridae, or "sheatfish". They are found in rivers throughout southern Asia. Though the genus contains more than one species, the name "wallago" is also used as a common name for Wallago attu.
There are currently five recognized species in this genus though W. hexanema is considered a species of uncertain validity: 
- Wallago attu (Bloch & J. G. Schneider, 1801) (Wallago)
- Wallago hexanema (Kner, 1866)
- Wallago leerii Bleeker, 1851
- Wallago maculatus Inger & P. K. Chin, 1959
- Wallago micropogon H. H. Ng, 2004
The wallago species are large, predatory catfishes. They have five rays in their dorsal fin. The caudal fin is deeply forked and has pointed lobes; it is disconnected from the anal fin, which differs from some of the other silurid genera.
- Ng, Heok Hee (2004). "Wallago micropogon: A New Species of Silurid Catfish (Teleostei: Siluridae) from Mainland Southeast Asia". In Buth, D. G. Copeia 2004 (1): 92–97. doi:10.1643/CI-02-192R3.
- Roberts, Tyson R. (1982). "Systematics and Geographical Distribution of the Asian Silurid Catfish Genus Wallago, with a Key to the Species". Copeia 1982 (4): 890–894. doi:10.2307/1444099. JSTOR 1444099.
- Froese, Rainer, and Daniel Pauly, eds. (2012). Species of Wallago in FishBase. February 2012 version.
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