Since its establishment in 2005, Kelah World (M) Sdn Bhd has committed its resources and developed its expertise in the preservation and conservation of the King of Rivers, the kelah, also known as the Mighty Mahseer, Tor Tambroides or Greater Brook Carp.

Mahseer or kelah as it is locally known, is acclaimed as a world famous, outstanding game and food fish of this region.  As a sport fish, it provides unparalleled recreation to anglers from all over the world, even compared to salmon.  It is known as the King of Rivers or tiger in the waters because of the fight it musters to wriggle off the angler's hook. 

In the recent decade, kelah formed a substantial natural fishery in the major riverine and ecosystems of the region, in commercial fisheries it occupies an important position for its good quality.  For the fishermen,  kelah is of considerable importance because of its size.  As a food fish, it fetches a high market price.

In Malaysia, kelah is found in Nenggiri in Kelantan, the Kenyir Dam in Taman Negara and the Endau-Rompin National Park.  In Asia, they are found in the Chao Phraya river in Thailand, Mekong river in Vietnam and in South Indonesia.