Pangasius, often sold commercially as basa, is one of the major fish species in the Mekong River and a traditional fish on the menu in Vietnam, Thailand and Cambodia. Over the years, catch of the fish has been replaced by acquaculture, especially in Vietnam and to a lesser extent in Thailand and Cambodia. In Vietnam, farmers in the Mekong Delta have pursued the business of fish farming for decades and Pangasius is a main protein source for the local people..