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.
Herring are forage fish, mostly belonging to the family of Clupeidae.
Thymallus thymallus, the grayling or European grayling, is a species of freshwater fish in the salmon family Salmonidae. It is the only species of the genus Thymallus native to Europe, where it is widespread from the United Kingdom and France to the Ural Mountains in Russia, and Balkans on the south-east, but does not occur in the southern parts of the continent. It was introduced to Morocco in 1948, but it does not appear to have become established there.
The flathead galaxias is a freshwater fish found in lowland rivers, streams and associated billabongs, backwaters, and wetlands of the southern Murray-Darling river system in southeastern Australia.
Tripterygion is a genus of fish in the family Tripterygiidae, the threefin blennies, the species of which are found in the north eastern Atlantic Ocean, the Mediterranean Sea and the Black Sea.
Percina austroperca, the southern logperch, is a small species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. They are highly resilient with a minimum population doubling time of less than 15 months. It is found in the Escambia and Choctawhatchee river systems in western Florida and southern Alabama.
The Pacific bluefin tuna is a predatory species of tuna found widely in the northern Pacific Ocean, but it is migratory and also recorded as a visitor to the south Pacific.
The Klamath largescale sucker is a species of ray-finned fish in the family Catostomidae.
The longnose darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the United States.
Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, troglomorphic fish, troglobitic fish, stygobitic fish, phreatic fish and hypogean fish.
The red-black triplefin is a species of fish in the family Tripterygiidae, the threefin blennies. It is widespread in the d the Mediterranean Sea and the Black Sea. In the Black Sea it occurs off the coasts of the Crimea and Ukraine.
The yellow triplefin ,> also known as the Abel's triplefin in South Africa, is a species of triplefin in the genus Enneapterygius. Males in this species can reach a maximum length of 2.5 centimetres. The blennies are generally bright yellow in colour, and males have black heads. They feed mostly on benthic invertebrates.
The black-faced blenny is a small benthic fish from the family Tripterygiidae (triplefin-blennies). It occurs at depths of 3 to 40 metres and lives on the substrate under large rocks, cliffs or other overhangs.
Enneapterygius fasciatus, known commonly as the tiny threefin or the banded triplefin, is a species of triplefin blenny in the genus Enneapterygius. It was originally described by Weber in 1909, under the name Tripterygium fasciatum, which was later renamed Tripterygion fasciatum. It is a tropical blenny found in coral reefs in the Indian and western Pacific Oceans, and has been described from East Africa to Papua New Guinea, the Solomon Islands, and Taiwan. E. fasciatus has been recorded swimming at a depth range of 1–25 metres (3.3–82 ft). Male E. fasciatus can reach a maximum length of 3 centimetres.
Helcogramma trigloides, the scarf triplefin, is a species of triplefin blenny in the genus Helcogramma. It was described by Pieter Bleeker in 1858 as Tripterygion trigloides. This is a widespread species in the western Pacific Ocean.
Trinorfolkia clarkei, known commonly as the Clarke's triplefin or Clarke's threefin, is a species of triplefin blenny in the genus Trinorfolkia. It was described by Alexander Morton in 1888 from specimens collected from Clarke Island in the Bass Strait. This species occurs I southern and western Australia from Camden Haven in New South Wales to Rottnest Island in Western Australia and around Tasmania. It occurs on coastal reefs and in estuaries frequently being observed around the pylons supporting structures such as jetties.
The slender grouper is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It is the only species in the genus Anyperodon. It is found in the Indo-Pacific region.
