Blackfin may refer to:
The short-finned eel, also known as the shortfin eel, is one of the 15 species of eel in the family Anguillidae. It is native to the lakes, dams and coastal rivers of south-eastern Australia, New Zealand, and much of the South Pacific, including New Caledonia, Norfolk Island, Lord Howe Island, Tahiti, and Fiji.
Halosaurs are eel-shaped fishes found only at great ocean depths. As the family Halosauridae, halosaurs are one of two families within the order Notacanthiformes; the other being the deep-sea spiny eels, Notacanthidae. Halosaurs are thought to have a worldwide distribution, with some 17 species in three genera represented. Only a handful of specimens have been observed alive, all in chance encounters with Remotely operated underwater vehicles.
Snook, Snooks, or Snoek may refer to:
The blackfin cisco was a North American salmonid fish in the freshwater whitefish sub-family Coregoninae. This silvery, deep-bodied fish with black fins, large eyes, a blunt snout and a terminal mouth, was one of the largest forms of ciscoes. The blackfin cisco used to inhabit the Great Lakes of North America until recently, but has been reported to have gone extinct. The blackfin cisco is a member of the C. artedi complex, whose taxonomy has not yet been resolved, and it may not represent a valid species.
The cusk-eel family, Ophidiidae, is a group of marine bony fishes in the Ophidiiformes order. The scientific name is from the Greek ophis meaning "snake", and refers to their eel-like appearance. True eels, however, diverged from other ray-finned fish during the Jurassic, while cusk-eels are part of the Percomorpha clade, along with tuna, perch, seahorses, and others.
Leptocephalus is a genus that was used for species of larval eels, called leptocephali, that were thought to be new fish species, or whose adult eel species were not known. Leptocephali differ so much in appearance from their adults that the larvae and adults of eels are not easily matched, and when first discovered, leptocephali were thought to be a distinct type of fishes, but not eels. Because of this, the genus designation of Leptocephalus was used for a while for unidentified leptocephali even after it was known that these were the larvae of eels thus becoming a "wastebasket taxon", but this practice is no longer used. Examples of marine congrid larvae, found in the western Indian Ocean and the Red Sea that were named this way are listed below. Only two species in two families are currently treated as having any validity, though the validity of L. bellottii is strongly in doubt.
The blackfin tuna is a species of tuna in the family Scombridae. It is occasionally referred to as the Bermuda tuna, blackfinned albacore, or deep bodied tunny. They are the smallest tuna species in the genus Thunnus, generally growing to a maximum of 100 cm (39 in) in length and weighing 21 kg (46 lb).
The black-banded sea krait, also known commonly as the Chinese sea snake or erabu, is a species of venomous snake in the subfamily Laticaudinae of the family Elapidae. In Japan it is known as erabu umi hebi, and in Okinawa as the irabu. It is found in much of the western Pacific Ocean.
The blackfin sorcerer is a species of saltwater eel in the family Nettastomatidae of the order Anguilliformes. It is found only in the Atlantic Ocean and the Mediterranean Sea.
The blackfin scad is a species of tropical marine fish of the jack family Carangidae. The species inhabits inshore waters throughout the Indo-Pacific region, although is rare in the western Indian Ocean. It is not a large species, with the largest reported capture being 25 cm, and it is distinguished readily from similar species by the prominent black dorsal fin. It is a predator which feeds on planktonic crustaceans, but little else is known of its biology. The blackfin scad is a minor food fish throughout its range, and is highly valued in Cambodia and Thailand.
Myrichthys maculosus, commonly known as the tiger snake eel, the ocellate snake eel or the spotted snake eel, is a species of fish in the family Ophichthidae, native to the Indo-Pacific. It is occasionally encountered in the aquarium trade. It grows to a length of 1 m (40 in).
Eels are ray-finned fish belonging to the order Anguilliformes, which consists of eight suborders, 20 families, 164 genera, and about 1000 species. Eels undergo considerable development from the early larval stage to the eventual adult stage and are usually predators.
The snake mackerel is the sole species of fish in the monotypic genus Gempylus, belonging to the family Gempylidae. It is found worldwide in tropical and subtropical oceans between the latitudes of 42°N and 40°S; adults are known to stray into temperate waters. It is found to a depth of 600 meters. Populations of the snake mackerel from the Atlantic and the Indo-Pacific differ in vertebral count and number of first dorsal fin spines, and so may represent separate species.
Ophichthus is a genus of eels in the snake eel family Ophichthidae.
The blackfin stonefish is a species of venomous ray-finned fish, a stonefish be longing to the subfamily Synanceiinae of the family Scorpaenidae, the scorpionfishes and their relatives. It is the only species in the monotypic genus. It is native to the western Indian Ocean where it occurs in areas with muddy bottoms. This species grows to a total length of 13 centimetres (5.1 in).
The blackfin snapper, also known as the blackspot snapper, blackfin red snapper, gun-mouth backfin, gun-mouth snapper, redfish and wrenchman is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It is native to the western Atlantic Ocean. It is a commercially important species, though it has been reported to carry the ciguatera toxin.
The highfin snake eel (Ophichthus altipennis, also known as the blackfin snake eel or the black-finned snake eel, is an eel in the family Ophichthidae. It was described by Johann Jakob Kaup in 1856, originally under the genus Microdonophis. It is a marine, tropical eel known from the eastern Indian Ocean and northwestern and western central Pacific Ocean, including Australia, French Polynesia, Indonesia, Japan, the Marshall Islands, Malaysia, the Philippines, and Papua New Guinea. It dwells at a depth range of 0 to 40 m, and forms burrows in soft inshore sand sediments. Males can reach a maximum total length of 103 cm.