Atlantic bluefin tuna, also known as thunnus thynnus, is a highly sought-after species in the fishing industry. Often referred to as giant bluefin tuna, these fish can grow up to 10 feet long and weigh as much as 1,500 pounds. Other synonyms for this species include northern bluefin tuna, Mediterranean bluefin tuna, and western Atlantic bluefin tuna. Some fishermen may also refer to it simply as bluefin or bluefin tuna. Regardless of the name used, this species remains a popular target for commercial and sport fishing due to its rich flavor and high value in sushi markets.