| Lasiognathus intermedius | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Lophiiformes |
| Family: | Thaumatichthyidae |
| Genus: | Lasiognathus |
| Species: | L. intermedius |
| Binomial name | |
| Lasiognathus intermedius | |
Lasiognathus intermedius is a species of marine ray-finned fish belonging to the family Thaumatichthyidae, the wolftrap anglers. This species is known from the deeper waters of the Atlantic and Pacific Oceans.
Lasiognathus intermedius was first formally described in 1996 by the Danish ichthyologist Erik Bertelsen and the American ichthyologist Theodore Wells Pietsch III with its type locality given as the Florida Current in the Western Atlantic Ocean at 34°18'N, 75°08'W, or 34°32'N, 75°26'W, from a depth between 0 and 1,050 m (0 and 3,445 ft). [2] This species belongs to the genus Lasiognathus which the 5th edition of Fishes of the World classifies within the family Thaumatichthyidae, within the suborder Ceratioidei of the anglerfish order Lophiiformes. [3]
Lasiognathus intermedius is a member of the genus Lasiognathus, this name is a combination of lasios, meaning "bearded", and gnathus, which means "jaw". This may be a reference to the many long teeth in the upper jaw, goving the appearance of a beard. The specific name intermedius, means "intermediate", and is an allusion to the morphology of the esca being intermediate between that of L. beebei and those of L. saccostoma and L. waltoni . [4]
Lasiognathus intermedius has its dorsal fin supported by 6 or 7 soft rays while the anal fin contains 4 or 5 soft rays. The bulb of the esca has no membrane-like anterior appendage while the appendage at the tip has a cylindrical stalk with small filaments emerging from the bases of the hooks on the esca, with no filaments or serration on its sides. The rera appendage is flattened towards its tip and is slender at its base. This species has a maximum standard length of 12.9 cm (5.1 in). [5]
Lasiognathus intermedius is found in the Atlantic and Pacific Oceans. In the Western Atlantic it is found from Newfoundland south to South Carolina and Bermuda, while in the south eastern Atlantic it has been recorded from off South Africa and in the Pacific from far offshore in the southeastern Pacific. It has been recorded from depths between 975 and 1,265 m (3,199 and 4,150 ft). [1]
Thaumatichthyidae, the wolftrap anglers, is a small family of marine ray-finned fishes, also called the wolftrap seadevils, classified within the suborder Ceratioidei, the deep-sea anglerfishes. They have distinctive upper jaws with movable premaxillaries that can be lowered to form a cage-like trap around the much shorter lower jaw.
The bulbous dreamer, or cosmoplitan dreamer, is a species of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep-sea anglerfishes. This fish has a circumglobal distribution in tropical and temperate oceans.
Lasiognathus saccostoma is a species of marine ray-finned fish belonging to the family Thaumatichthyidae, the wolftrap anglers. This species is known from the eastern central Pacific Ocean and tropical waters of the Atlantic Ocean.
The complete anglerfish (Lasiognathus) is a genus of deep-sea anglerfish in the family Thaumatichthyidae, with six species known from the Atlantic and Pacific Oceans. Its lure apparatus appears to consist of a fishing rod, a fishing line, bait, and hooks. It is also distinctive for an enormous upper jaw with premaxillaries that can be folded down to enclose the much shorter lower jaw.
Lasiognathus amphirhamphus is a species of marine ray-finned fish belongning to the family Thaumatichthyidae, the wolftrap anglers. This species was first formally described in 2005 by the American ichthyologist Theodore Wells Pietsch III and is known from a single Zoological specimen, the holotype, collected from the Madeira Abyssal Plain in the east-central Atlantic Ocean where it occurs at a depth of from 1,200 to 1,305 metres. The holotype, a female, had a standard length of 15.7 cm (6.2 in). This species is characterized by having only two bony hooks on its esca, which are lightly pigmented. The distal escal appendage is elongated and cylindrical with a long, compressed prolongation at the tip as in L. saccostoma. The prolongation has six tiny filaments at the tip and no lateral serrations. The posterior escal appendage is broad and laterally compressed. Its species name is from the Greek for "double hook", referring to its escal hooks.
Lasiognathus beebei is a species of marine ray-finned fish belongning to the family Thaumatichthyidae, the wolftrap anglers. This species is known from around the Hawaiian Islands in the Pacific Ocean and from around Madeira and Bermuda in the Atlantic.
Lasiognathus waltoni is a species of marine ray-finned fish belonging to the family Thaumatichthyidae, the wolftrap anglers. This species is known only from the eastern central Pacific Ocean.
Caulophryne polynema is a species of marine ray-finned fish belonging to the family Caulophrynidae, the fanfins. This species is a deepwater species which is found in the Atlantic and Pacific Oceans. Like other deepwater anglerfishes it shows extreme sexual dimorphism with the males being much smaller than the females and acting as sexual parasites of the females.
Chirophryne is a monospecific genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. The only species in the gneus is Chirophryne xenolophus, the longhand dreamer. This species is known from a few locations in the Atlantic and Pacific Oceans.
Danaphryne is a monospecific genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. The only species in the genus is Danaphryne nigrifilis which is found in the tropical and temperate regions of all of the world's oceans.
Pentherichthys is a monospecific genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep-sea anglerfishes. The only species in the genus is Pentherichthys atratus which is found in the bathypelagic zones of the tropical and subtropical Atlantic, Indian and Pacific Oceans. The males of this species are dwarfed and are not parasitic on the females.
Lasiognathus dinema is a species of marine ray-finned fish belonging to the family Thaumatichthyidae, the wolftrap anglers. This species is known only from the northern Gulf of Mexico.
Caulophryne pelagica is a species of marine ray-finned fish belonging to the family Caulophrynidae, the fanfins. This species is a deepwater species which is found in the eastern Atlantic, Indian Ocean, Pacific Ocean and Southern Ocean. Its biology is little known but similar species show extreme sexual dimorphism with the very small makes seeking out and attaching themselves to the much larger females and becoming parasites of the females.
Caulophryne jordani, the fanfin angler, is a species of marine ray-finned fish belonging to the family Caulophrynidae, the fanfins. This species is a deepwater species which is found in Oceanic waters around the world. Like other deepwater anglerfishes it shows extreme sexual dimorphism with the males being much smaller than the females and acting as sexual parasites of the females.
Ceratias uranoscopus, the stargazing seadevil, is a species of marine ray-finned fish belonging to the family Ceratiidae, the warty sea devils. The fish is both bathypelagic and mesopelagic and can typically be found at depths ranging from 500 to 1,000 metres. It is endemic to tropical waters and can be found in the Atlantic, Pacific, and Indian Oceans.
Diceratias bispinosus, the two-rod angler, is a species of deep sea marine ray-finned fish belonging to the family Diceratiidae, the double anglers. This species is found in the Indo-Pacific region.
Oneirodes carlsbergi is a species of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep-sea anglerfishes. This fish is found mainly in the tropical eastern Atlantic and Pacific Oceans.
Gigantactis elsmani, Elsman's whipnose, is a species of marine ray-finned fish belonging to the family Gigantactinidae, the whipnose anglers. This species is found in the deeper waters of the Atlantic and Pacific Oceans.
Gigantactis kreffti is a species of marine ray-finned fish belonging to the family Gigantactinidae, the whipnose anglers. This species is found in the deeper waters of the South Atlantic and Western Pacific Oceans.
Chaenophryne melanorhabdus is a species marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. This predatory, deep-sea fish is found in the Pacific Ocean. Like other deep-sea anglerfishes dreamers are sexually dimorphic with the matamorphosed females dwarfing the metamorphosed males, the males are not sexual parasites.
