The ghost knifefishes are a family, Apteronotidae, of ray-finned fishes in the order Gymnotiformes. These fish are native to Panama and South America. They inhabit a wide range of freshwater habitats, but more than half the species in the family are found deep in rivers where there is little or no light.
The Lamniformes are an order of sharks commonly known as mackerel sharks. It includes some of the most familiar species of sharks, such as the great white and extinct megalodon, as well as more unusual representatives, such as the goblin shark and megamouth shark.
The angelsharks are a group of sharks in the genus Squatina in the family Squatinidae, which are unusual in having flattened bodies and broad pectoral fins that give them a strong resemblance to rays. This genus is the only one in its family and order Squatiniformes. They occur worldwide in temperate and tropical seas. Most species inhabit shallow temperate or tropical seas, but a few species inhabits deeper water, down to 1,300 m (4,300 ft). Angel sharks are sometimes called monkfish, although this name is also applied to members of the genus Lophius.
Citharichthys is a genus of flatfish in the large-tooth flounder family, Paralichthyidae. They have both eyes on the left sides of their heads. They are native to the oceans around the Americas, with a single species, C. stampflii off the West African coast. Most are found in relatively shallow depths, but the genus also includes species found in deep water and species that enter fresh water.
The Hypopomidae are a family of fishes in the order Gymnotiformes known as the bluntnose knifefish. They may also be called grass or leaf knifefishes. These electric fish are not often eaten, of little commercial importance, rarely kept as aquarium fish, and poorly studied; however, species in this family may constitute a significant fraction of the biomass in the areas they inhabit.
Coelorinchus is a genus of rattails.
Coryphaenoides is a genus of rattails which is found in all oceans of the world. They are found in deep waters and C. yaquinae, recorded to 7,012 m (23,005 ft), is the only member in the family known from the hadal zone.
Hymenocephalus is a genus of rattails.
Ventrifossa is a genus of rattails in the family Macrouridae.
The damba is a species of cichlid.
Serranus is a genus of fish in the family Serranidae. It is one of five genera known commonly as the "Atlantic dwarf sea basses". These fish are hermaphrodites, each individual possessing functional male and female reproductive tissues. When a pair spawns, one fish acts as a male and the other acts as a female.
Trichonotus is a genus of marine perciform fishes. Species of Trichonotus are distributed throughout the Indo-West Pacific. This genus is the only member of the family Trichonotidae.
The spotted sand-diver is a perciform fish in the family Trichonotidae. T. setiger is the type species of genus Trichonotus.
Joseph (Joe) Schieser Nelson was an American ichthyologist. He is best known for the book Fishes of the World, which is the standard reference in fish systematics and evolution.
Gephyroberyx is a genus of fish in the slimehead family.
Creedia is a genus of sandburrowers native to the Indian and western Pacific oceans.
Limnichthys is a genus of sandburrowers native to the Indian and Pacific oceans.
Thorogobius is a genus of gobies native to the eastern Atlantic Ocean and the Mediterranean Sea.
Trichonotus elegans, the long-rayed sand-diver, is a species of marine perciform fishes. It is found throughout the Indo-West Pacific. This species occurs in coastal reef slopes and deep outer reef lagoons where the channels create currents. It is a sociable species which is found in large groups each including a number of larger males. Its preferred habitat is substrates made up of sand and coral rubble). It is normally seen sitting still in the water column above sandy slopes. Their social grouping normally consist of a single male and a harem of around twelve females. Species in the genus Trichonotus are protogynous hermaphrodites. They are usually buried when the current is slack.
Coryphaenoides woodmasoni is a fish species belonging to the family Macrouridae and the order Gadiformes. The species was described by Alfred William Alcock in 1873 and named in honour of James Wood-Mason. There are no subspecies listed in the Catalogue of Life.
