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. The Atlantic bluefin 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 Clupeidae.
The term billfish refers to a group of predatory fish characterised by prominent bills, or rostra, and by their large size; some are longer than 4 m (13 ft). Billfish include sailfish and marlin, which make up the family Istiophoridae, and swordfish, sole member of the family Xiphiidae. They are apex predators which feed on a wide variety of smaller fish, crustaceans, and cephalopods. These two families are sometimes classified as belonging to the order Istiophoriformes, a group with origins in the Late Cretaceous around 71 million years ago with the two families diverging from one and another in the Late Miocene around 15 million years ago. However, they are also classified as being closely related to the mackerels and tuna within the suborder Scombroidei of the order Perciformes. However, the 5th edition of the Fishes of the World does recognise the Istiophoriformes as a valid order, albeit including the Sphyraenidae, the barracudas.
The red-tailed black shark, also known as the redtail shark and redtail sharkminnow, is a species of freshwater fish in the carp family, Cyprinidae. It is endemic to Thailand and currently critically endangered, but common in aquaria, where it is prized for its deep black body and vivid red or orange tail. The red-tailed black sharks seen in the aquarium trade today are all captive bred.
The cobbler wobbegong, Sutorectus tentaculatus, is a carpet shark in the family Orectolobidae, the only member of the genus Sutorectus. It is found in the subtropical eastern Indian Ocean around Western Australia between latitudes 26° S and 35° S. It is frequently found in rocky and coral reef areas. Cobbler wobbegongs reach a length of 92 cm. It has unbranched dermal lobes on the head, rows of warty tubercles along the back and black spots on the body and fins.
The harlequin catshark is a species of finback catshark, part of the family Proscylliidae, and the only member of the genus Ctenacis. This shark is found in the western Indian Ocean off the coast of Somalia, at depths between 70 and 170 m. The 46 cm holotype was the only specimen that was ever found.
The Australian spotted catshark is a catshark of the family Scyliorhinidae, found only around Australia between 32 and 38°S, at depths between 10 and 180 m. It can grow up to 90 cm. Females of this species were observed as being reproductive year round. They are also confirmed as being a single oviparous species.
The Izu catshark is a species of catshark, family Scyliorhinidae, found only in the waters around Japan, at depths down to 100 m (328 ft). It can grow up to a length of 41 cm (16.1 in).
Delminichthys adspersus is a species of cyprinid fish.
Delminichthys ghetaldii is a species of ray-finned fish in the family Cyprinidae.
Delminichthys krbavensis is a species of fish in the family Cyprinidae. It is found only in Krbavsko Polje in Croatia, in a single karstic freshwater spring. It has disappeared from stream habitats, and is threatened by further habitat loss.
Neolamprologus petricola is a species of cichlid endemic to Lake Tanganyika where it is only known from the shores of the Democratic Republic of the Congo. This species reaches a length of 14 centimetres (5.5 in) TL. It can also be found in the aquarium trade.
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.
An anchovy is a small, common forage fish of the family Engraulidae. Most species are found in marine waters, but several will enter brackish water, and some in South America are restricted to fresh water.
Anabarilius yangzonensis is a species of ray-finned fish in the genus Anabarilius, that are currently critically endangered. They can only be found in Yangzong Lake of China.
Leuciscinae is a subfamily of the freshwater fish family Cyprinidae, which contains the true minnows. Members of this subfamily are known as European minnows or the Old World (OW) clade of minnows. As the name suggests, most members of this family are found in Eurasia, aside from the golden shiner, which is found in eastern North America.
The leaping bonito is a species of saltwater finfish from the Scombridae (Mackerel) family. Scombridae includes such tribes as the mackerels, tunas, and bonitos – the latter of which, the Sardini tribe, this fish is a member. It is the only member of the genus Cybiosarda, which is therefore called a monotypic taxon. Since the bonitos and tunas are close relatives, this fish has variously been referred to by such other common names as Australian tuna, striped bonito, and Watson's bonito.
