Tuna type is a term used to describe the various species of tuna that exist in the world's oceans. YELLOWFIN (9 letters) is a species of tuna that is found in tropical and subtropical waters around the world. Ahi (3 letters) is another name for YELLOWFIN tuna, and is also known as bigeye tuna. BLUEFIN (7 letters) is a species of tuna that is found in the Atlantic, Mediterranean, and Pacific Oceans. ALBACORE (8 letters) is a species of tuna that is found in the temperate and subtropical waters of the Pacific and Indian Oceans.