Genus Thunnus is a group of large, oceanic fish commonly known as tunas. However, there are many synonyms for this genus, including Albacora, Atún, Bonito del Norte, Tonijn, and many more. These synonyms are used according to the specific region in which they are being referred. For example, Albacora is used in Spain, Atún is used in South America and Tonijn is widely used in the Netherlands. Each synonym represents a different species within the Genus Thunnus group and has varying characteristics and features depending upon the environment they are found in. Despite having different names in various regions, all the fish belonging to this genus are highly valued for their commercial, recreational and ecological importance.