A tuna is a saltwater fish that belongs to the tribe Thunnini, a subgrouping of the Scombridae (mackerel) family. The Thunnini comprise 15 species across five genera, the sizes of which vary greatly, ranging from the bullet tuna up to the Atlantic bluefin tuna, which averages 2 m (6.6 ft) and is believed to live up to 50 years.
Mackerel is a common name applied to a number of different species of pelagic fish, mostly from the family Scombridae. They are found in both temperate and tropical seas, mostly living along the coast or offshore in the oceanic environment.
Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousands of kilometres. Such migrations are usually done for better feeding or to reproduce, but in other cases the reasons are unclear.
The albacore, known also as the longfin tuna, is a species of tuna of the order Scombriformes. It is found in temperate and tropical waters across the globe in the epipelagic and mesopelagic zones. There are six distinct stocks known globally in the Atlantic, Pacific, and Indian oceans, as well as the Mediterranean Sea. The albacore has an elongate, fusiform body with a conical snout, large eyes, and remarkably long pectoral fins. Its body is a deep blue dorsally and shades of silvery white ventrally. Individuals can reach up to 1.4 m in length.
The pantropical spotted dolphin is a species of dolphin found in all the world's temperate and tropical oceans. The species was beginning to come under threat due to the killing of millions of individuals in tuna purse seines. In the 1980s, the rise of "dolphin-friendly" tuna capture methods saved millions of the species in the eastern Pacific Ocean and it is now one of the most abundant dolphin species in the world.
The Atlantic bluefin tuna is a species of tuna in the family Scombridae. It is variously known as the northern bluefin tuna, giant bluefin tuna [for individuals exceeding 150 kg (330 lb)], and formerly as the tunny.
The yellowfin tuna is a species of tuna found in pelagic waters of tropical and subtropical oceans worldwide.
The Atlantic blue marlin is a species of marlin endemic to the Atlantic Ocean. It is closely related to, and usually considered conspecific with, the Indo-Pacific blue marlin, then simply called blue marlin. Some authorities consider both species distinct.
The skipjack tuna is a medium-sized perciform fish in the tuna family, Scombridae, and is the only member of the genus Katsuwonus. It is otherwise known as katsuo, arctic bonito, mushmouth, oceanic bonito, striped tuna or victor fish. It grows up to 1 m (3 ft) in length. It is a cosmopolitan pelagic fish found in tropical and warm-temperate waters. It is a very important species for fisheries.
Pelagic fish live in the pelagic zone of ocean or lake waters—being neither close to the bottom nor near the shore—in contrast with demersal fish that live on or near the bottom, and reef fish that are associated with coral reefs.
The dogtooth tuna, also known as white tuna, is a species of pelagic marine fish which belongs to the family Scombridae.
A fish aggregatingdevice (FAD) is a man-made object used to attract pelagic fish such as marlin, tuna and mahi-mahi. They usually consist of buoys or floats tethered to the ocean floor. FADs attract fish for reasons that vary by species.
Marlin fishing or billfishing is offshore saltwater game fishing targeting several species of fast-swimming pelagic predatory fish with elongated rostrum collectively known as billfish, which include those from the families Istiophoridae and Xiphiidae (swordfish). It is considered by some fishermen to be a pinnacle of big-game fishing, due to the size, speed and power of the billfish and their relative elusiveness.
Rexea solandri, the silver gemfish, is a species of snake mackerel found in the southwestern Pacific Ocean around Australia and New Zealand with reports of possible records from Madagascar and Japan. Gemfish appear as infrequent, but regular bycatch species in pelagic longline fisheries for tuna in the waters around the Hawaiian archipelago and American Samoa. This species occurs in schools at depths of between 100 and 800 metres, though mostly between 300 and 450 metres. This species can reach a length of up to 110 centimetres (43 in) SL and a maximum weight of 16 kilograms (35 lb) has been recorded. This species is important to local commercial fisheries.
Scomberomorini is a tribe of ray-finned saltwater bony fishes that is commonly known as the Spanish mackerels, seerfishes or seer fish. This tribe is a subset of the mackerel family (Scombridae) – a family that it shares with three sister tribes, the tunas, mackerels, and bonitos, and the butterfly kingfish. Scomberomorini comprises 21 species across three genera. They are pelagic fish, fast swimmers and predatory in nature, that fight vigorously when caught. They are mainly caught using hooks and lines.
The little tunny, also known as the false albacore, little tuna, bonita, or erroneously as the blue bonito, is a species of tuna in the family Scombridae. It can be found in the Atlantic Ocean and the Mediterranean and Black seas; in the western Atlantic, it ranges from Brazil to the New England states. The little tunny is a pelagic fish that can be found regularly in both offshore and inshore waters, and it is classified as a highly migratory species. The little tunny is best identified by the "worm-like" markings on its back and the dark spots appearing between its pectoral and ventral fins.
Land-based game fishing is a form of big-game sport fishing in which anglers attempt to catch oceanic game fish from shore rather than from ocean-going boats. The locations for such activities are generally rock platforms, though wharfs, jetties and beaches are also common. Some species such as sharks can be targeted in shallow littoral water, however most other species prefer deeper pelagic water, and this limits the areas where these types can be fished from the shore. Tackle used is usually comparable to that used on boats, but some differences are necessary, such as changes in rod length. Different tackle is used according to location and species targeted.
Mahi-mahi are swift and acrobatic game fish with striking colours. These colours darken when the fish dies The current IGFA all tackle record is 39.91 kilograms (88lb), caught in 1998 in Exuma, Bahamas by Chris Johnson of Lake Mary, Florida. Catches average 7 to 13 kilograms, and any mahi-mahi over 18 kilograms (40 lb) is exceptional. Males are often larger than females.
The Chilean jack mackerel, sometimes called the Inca scad or Peruvian jack mackerel, is a species of jack mackerel in the genus Trachurus of the family Carangidae. Since the 1970s, it has become one of the world's more important commercial fish species. High volumes have been harvested, but the fishery may now be in danger of collapsing.
Fishing is important to the national economy of Vanuatu. It is the main source of income for many in the islands and Vanuatu's biggest export. According to 2009 figures, approximately 77% of households in Vanuatu are involved in fishing activity. According to 2005 figures, Vanuatu caught 151,080 fish in that year, with frozen fish accounted for half of Vanuatu's commodity exports.
