''Lasiognathus intermedius'' is a species of

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

ray-finned fish belonging to the family

Thaumatichthyidae Thaumatichthyidae, the wolftrap anglers, is a small family of deep-sea anglerfishes, containing two genera and eight species found in all oceans. They are commonly known as wolftrap anglers or wolftrap seadevils because of their distinctive upper ...

, the wolftrap anglers. This species is known from the deeper waters of the Atlantic and Pacific Oceans.

Taxonomy

''Lasiognathus intermedius'' was first formally described in 1996 by the Danish

ichthyologist Ichthyology is the branch of zoology devoted to the study of fish, including bony fish ( Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 33,400 species of fish had been described as of Octobe ...

Erik Bertelsen Erik Bertelsen (8 August 1912 – 18 March 1993) was a Danish ichthyologist, who specialised in deep sea fish. The fish, '' Diaphus bertelseni'' is named in his honour. He studied biology at the University of Copenhagen (1930 -) and in 1937 start ...

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 . This species belongs to the genus ''

Lasiognathus 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 (the projecting bas ...

'' which the 5th edition of ''

Fishes of the World ''Fishes of the World'' by the American ichthyologist Joseph S. Nelson (1937–2011) is a standard reference for fish systematics. Now in its fifth edition (2016), the work is a comprehensive overview of the diversity and classification of the ...

'' classifies within the family Thaumatichthyidae, within the suborder Ceratioidei of the

anglerfish The anglerfish are fish of the teleost order Lophiiformes (). They are bony fish named for their characteristic mode of predation, in which a modified luminescent fin ray (the esca or illicium) acts as a lure for other fish. The luminescence ...

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

Lophiiformes.

Etymology

''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 Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

''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''.

Description

''Lasiognathus intermedius'' has its dorsal fin supported by 6 or 7 soft rays while the

anal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

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 Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish m ...

of .

Distribution and habitat

''Lasiognathus intermedius'' is found in the Atlantic and Pacific Oceans. In the Western Atlantic it is found from

Newfoundland Newfoundland and Labrador (; french: Terre-Neuve-et-Labrador; frequently abbreviated as NL) is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region ...

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 .

References

{{Taxonbar, from=Q2162231

intermedius The vastus intermedius () (Cruraeus) arises from the front and lateral surfaces of the body of the femur in its upper two-thirds, sitting under the rectus femoris muscle and from the lower part of the lateral intermuscular septum. Its fibers end ...

Taxa named by Theodore Wells Pietsch III Fish described in 1996 Taxa named by Erik Bertelsen