Sprat is the common name applied to a group of forage fish belonging to the genus Sprattus in the family Clupeidae. The term also is applied to a number of other small sprat-like forage fish. Like most forage fishes, sprats are highly active, small, oily fish. They travel in large schools with other fish and swim continuously throughout the day.
The banded bellowsfish, banded yellowfish, banded snipefish, or bluebanded bellowsfish, is a species of fish of the family Macroramphosidae, found in southern oceans at depths of 35 to 1,000 m. Its length is up to 30 cm (12 in).
Slickheads or nakedheads are a family, Alepocephalidae, of deep-water fishes, most common below 1,000 metres (3,300 ft). They get their name from the lack of scales on the head. It has about nineteen genera with ca. 95 species. Some species bear photophores. In Japanese they are known as Sekitori Iwashi.
The black ruff is a medusafish, the only member of the genus Centrolophus. It is a bathypelagic fish found in all tropical and temperate oceans at depths of 50 to 1,000 m. Its length is typically up to 60 cm (24 in), but it may reach 150 cm (60 in). Other common names include rudderfish and blackfish.
The sargassum fish, anglerfish, or frog fish is a frogfish of the family Antennariidae, the only species in its genus. It lives among Sargassum seaweed which floats in subtropical oceans. The scientific name comes from the Latin histrio meaning a stage player or actor, and refers to the fish's feeding behaviour.
The smooth lanternshark or slender lanternshark is a species of dogfish shark in the family Etmopteridae, found widely in the Atlantic and Pacific Oceans. It inhabits benthic environments at a depth of 274–1,000 m (899–3,281 ft), and pelagic environments at a depth of 0–708 m (0–2,323 ft). The smooth lanternshark forms a species group with the larger blurred lanternshark, both of which are distinguished from other members of their family by small, irregularly arranged dermal denticles with a truncated shape. This species has a slender, dark brown body with an indistinct black band on the sides over the pelvic fins, and reaches 50 cm (20 in) in length. This slow-growing, ovoviviparous shark feeds on smaller squid, fishes, and fish eggs. Smooth lanternsharks are often caught as bycatch in eastern Atlantic and Japanese commercial fisheries. The International Union for Conservation of Nature (IUCN) has evaluated this species as of Least Concern because of its wide distribution and limited threats.
The starry smooth-hound is a houndshark of the family Triakidae. It is found on the continental shelves of the northeast Atlantic, between latitudes 61° N and 16° N, from the surface to a depth of 200 m (660 ft). It can grow up to a length of 1.4 m.
Bajacalifornia is a genus of slickheads. It was described in 1925 by Charles Haskins Townsend and John Treadwell Nichols on the basis of Bajacalifornia burragei which was discovered in 1911 during the deep sea expedition of the research vessel USS Albatross off the coast of Todos Santos Bay at the Baja California peninsula. In 1952 Ichthyologist Albert Eide Parr published a revision of this genus.
Paraliparis is a genus of fish in the family Liparidae, the snailfishes. It is found in benthic, benthopelagic and pelagic habitats in all the world's oceans.
Bathyprion danae, the fangtooth smooth-head, is a species of slickhead found in deep waters of the Atlantic and Pacific Oceans. It is in the monotypic genus Bathyprion.
Bathytroctes is a genus of slickheads that occur in the depths of the oceans.
Conocara is a genus of slickheads found in the deep waters of the oceans.
Leptoderma is a genus of slickheads found in the deep waters of the oceans.
Mirognathus normani, Norman's Smooth-head, is a species of slickhead native to the north-east and western Atlantic Ocean. It is the only described species in its genus. This species grows to a length of 20 centimetres (7.9 in) SL.
Rinoctes nasutus, the abyssal smooth-head, is a species of slickhead that is found at depths of 2,000 metres (6,600 ft) to 4,156 metres (13,635 ft) in the Atlantic and Indian Oceans as well as possibly occurring in the Pacific Ocean. This species is the only known species in its genus. This species grows to a length of 19 centimetres (7.5 in) SL.
Rouleina is a genus of slickheads.
Talismania is a genus of slickheads.
Xenodermichthys is a small genus of slickheads. They have blank white eyes that look blind.
