Fish production in Nepal is confined to inland waters including ponds, lakes, reservoirs and rivers. The southern Terai region of the country is the main area for warm water aquaculture. Aquaculture of common carp, Chinese carps and Indian major carps substantially increased from 1 150 tons to 15 023 tons from 1979 to 2000 (DOFD, 2001). However, cold water fish culture in the mid hills is at the very beginnings although a few ventures show that it is a profitable enterprise. Rainbow trout is the best suited exotic fish for growing commercially in mid-hills of Nepal. The culture technology and seed of rainbow trout are available in the country.