bigeye tuna

The bigeye tuna (Thunnus obesus) is a large-eyed tuna species found in warm ocean waters worldwide. It is characterized by long pectoral fins and often a bluish stripe on its side.1

Tunas, including the bigeye, belong to the genus Thunnus and are known for their robust, streamlined bodies and ability to regulate their body temperature above that of the surrounding water. This unique physiological trait allows them to maintain higher muscle temperatures, aiding in their long-distance migrations and active swimming.2

Bigeye tuna are commercially valuable and are caught using various methods, including drifting longlines, particularly in tropical Atlantic waters. They are a significant part of the catch, alongside yellowfin and albacore tuna.23