The basa fish, Pangasius bocourti, is a species of catfish in the family Pangasiidae. Basa are native to the Mekong and Chao Phraya basins in Indochina.[2] These fish are important food fish with an international market. They are often labeled in North America and Australia as "basa fish", "swai",[3] or "bocourti".[4] In the UK all species of Pangasius may legally be described as river cobbler, basa, pangasius, panga, or any of these with the addition of "catfish".[5] In Europe, these fish are commonly marketed as "pangasius" or "panga".[6] Other related shark catfish may occasionally be incorrectly labeled as basa fish, including P. hypophthalmus (iridescent shark) and P. pangasius (yellowtail catfish).