This document summarizes trout fish farming in Pakistan. It discusses the two main species of trout used for farming: rainbow trout and brown trout. Rainbow trout typically weigh 2-3 kg and can reach up to 25.4 kg, while brown trout typically weigh 1-2 kg and can reach up to 20 kg. Optimal water conditions for trout production are outlined. Potential locations for fish farms in northern Pakistan are identified. Initial costs, operational costs, expected revenue and profits from a model trout farm are presented. Local and export markets for trout are also discussed.