Tuna is a popular fish that is widely consumed around the world. There are several varieties of tuna, including BIGEYE (6 letters), Ahi (3 letters) and ALBACORE (8 letters). BIGEYE tuna is a deep-water species that is found in tropical and temperate waters around the world. It is characterized by its large eyes and firm flesh. Ahi tuna, also known as yellowfin tuna, is a medium-sized species that is found in tropical and subtropical waters. It has a mild flavor and is often served raw. ALBACORE tuna is a large species that is found in temperate and tropical waters. It is characterized by its white flesh and is often canned for consumption.