Acanthocybium - The body is elongated and covered with small, scarcely visible scales; the back is an iridescent blue, while the sides are silvery, with a pattern of vertical blue bars.
Allothunnus - The slender tuna, Allothunnus fallai, is a species of tuna, the only species in the genus Allothunnus, found around the world in the southern oceans between latitudes 20° and 50° South.
Auxis - Auxis is a genus of ocean-dwelling fish in the family Scombridae, all of which are tuna, although other tuna species are found in other genera.
Gasterochisma - The butterfly kingfish, bigscale mackerel, or butterfly mackerel, Gasterochisma melampus, the only species in the genus Gasterochisma, is found around the world in southern temperate waters, down to 200 m in open water.
Gymnosarda - Dogtooth tuna frequent reef environments, with smaller fish being more commonly found near shallow reef areas and larger ones haunting deep reef drop off areas, seamounts and steep underwater walls.
Katsuwonus - It is a streamlined, fast-swimming pelagic fish, common in tropical waters throughout the world, where it inhabits surface waters in large shoals , feeding on fish, crustaceans, cephalopods and mollusks.
Thunnus - Thunnus is a genus of ocean-dwelling fish in the family Scombridae, all of which are tuna, although other tuna species are found in other genera.