Genus Tetragonurus belongs to the family of large oceanic fishes commonly known as squaretails. The scientific name for this unique fish has several synonyms depending on the region and the language. The most common synonyms for Genus Tetragonurus are commonly known as the squaretail tunas. Other synonym names include longtail tuna, black randagio, black skipjack, and long-tailed-oceanic-tuna. While these fish are considered a delicacy in many countries, they are also an essential source of food for larger predatory fish, making them a significant factor in oceanic food chains. With its distinct characteristics and various synonym names, Genus Tetragonurus continues to fascinate both fishermen and researchers alike.