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.
Pollock or pollack is the common name used for either of the two species of North Atlantic marine fish in the genus Pollachius. Pollachius pollachius is referred to as pollock in both North America and the United Kingdom, while Pollachius virens is usually known as coley in the British Isles. Other names for P. pollachius include the Atlantic pollock, European pollock, lieu jaune, and lythe; while P. virens is also known as Boston blue, silver bill, or saithe.
The cutlassfishes are about 45 species of predatory fish in the family Trichiuridae found in seas throughout the world. Fish of this family are long, slender, and generally steely blue or silver in colour, giving rise to their name. They have reduced or absent pelvic and caudal fins, giving them an eel-like appearance, and large fang-like teeth.
Maurolicus is an oceanic ray-finned fish genus which belongs in the marine hatchetfish family Sternoptychidae. They are commonly known as pearlsides, but the brilliant pearlside is the related Argyripnus iridescens. Occasionally, "bristle-mouth fishes" is used as a common name, but that usually refers to the genus Argyripnus or the family Gonostomatidae.
Antigonia is a genus of boarfishes, the largest genus in its family. These are deep-water species, generally found at depths below 50 m (160 ft). Various extinct species were once placed within Antigonia, but have since been removed to Eoantigonia and Proantigonia
Exocoetus is a genus of flying fishes. It is a bony fish. The body is covered with cycloid scales. The mouth is wide, and the jaws bear teeth. It is a marine fish. The tail has hypobatic fins as the ventral lobe.
The silver scabbardfish, Lepidopus caudatus, is a cutlassfish of the family Trichiuridae found throughout the temperate seas of the world. It grows to over 2 metres in length.
Cypselurus is a genus of flying fish in the family Exocoetidae.
The little sleeper shark is a small sleeper shark of the family Somniosidae found in the northeast Atlantic, western Mediterranean, and western Pacific around New Zealand, at depths between 200 and 1,000 m. Its length is up to 1.43 m.
Bagrichthys is a genus of bagrid catfishes.
Zenopsis is a genus of dories, a group of marine fish. There are four extant species, but the genus is also known from fossils dating back to the Oligocene epoch. They largely resemble the better-known John Dory, and are typically found in relatively deep water, below normal scuba diving depth.
The black scabbardfish is a bathypelagic cutlassfish of the family Trichiuridae found in the Atlantic Ocean between latitudes 69°N and 27°N at depths between 180 and 1,700 m. Its length is up to 110 cm (3.6 ft), but it reaches maturity around 80 to 85 cm.
The razorback scabbardfish, Assurger anzac, is a rare species of cutlassfish, family Trichiuridae, and the only member of its genus. It has been caught from scattered locations worldwide: in the Atlantic Ocean it is known from off Puerto Rico, Uruguay, and the Walvis Ridge, in the Indian Ocean it is known from off western Australia, and in the Pacific Ocean it is known from off New Guinea, southern Japan, Midway Island, California, and the Nazca and Sala y Gomez Ridges. Adults are thought to be benthopelagic, occurring at a depth of 150–400 meters (490–1,310 ft), while juveniles are found near the surface or in midwater.
Fish are very diverse animals and can be categorised in many ways. This article is an overview of some of ways in which fish are categorised. Although most fish species have probably been discovered and described, about 250 new ones are still discovered every year. According to FishBase, 34,300 species of fish had been described as of September 2020. That is more than the combined total of all other vertebrate species: mammals, amphibians, reptiles and birds.
Several species of fish are claimed to produce hallucinogenic effects when consumed. For example, Sarpa salpa, a species of sea bream, is commonly claimed to be hallucinogenic. These widely distributed coastal fish are normally found in the Mediterranean and around Spain, and along the west and south coasts of Africa. Occasionally they are found in British waters. They may induce hallucinogenic effects similar to LSD if eaten. However, based on the reports of exposure they are more likely to resemble hallucinogenic effects of deliriants than the effects of serotonergic psychedelics such as LSD. In 2006, two men who apparently ate the fish experienced hallucinations lasting for several days. The likelihood of hallucinations depends on the season. Sarpa salpa is known as "the fish that makes dreams" in Arabic.
Plagiogeneion is a genus of fish in the family Emmelichthyidae, the rovers. Members of this genus are native to the southeastern Atlantic, Indian, and Pacific Oceans.
Evoxymetopon is a genus of cutlassfish found in all oceans. It is one of nine genera in the family Trichiuridae.
Lepidopus is a genus of fishes belonging to the family Trichiuridae.
