Systematic position (Nelson 2006) Class- Actinopterygii (Ray- finned fish) Order- Siluriformes (Catfishes) Family- Bagridae (Bagrid catfishes) Genus- Sperata Species- S. seenghala Common/local names: Fishbase: Gaint river catfish Bangladesh: Guizza (গুইজ্জা), Guizza ayer (গুইজ্জা আইড়) (Rahman 1989) India: Auri, Ari, Pogal,