''Lasiognathus saccostoma'' 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 eastern central Pacific Ocean and tropical waters of the Atlantic Ocean.

Taxonomy

''Lasiognathus saccostoma'' was first formally described in 1925 by the English

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 ...

Charles Tate Regan with its type locality given as the Caribbean Sea, approximately northwest of Negril, Jamaica at 18°50'N, 79°07'W, from a depth of around . When Regan described this species he proposed the new monospecific 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 ...

'', making this species the type species of that genus. The genus ''Lasiognathus'' is classified by 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 ...

in the family Thaumatichthyidae within the

suborder Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...

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 saccostoma'' 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 ...

''saccostoma'', combines ''sakkos'', which means "bag", "pouch" or "pocket", with ''stoma'', meaning "mouth", a reference to the premaxillaries having a wide membrane which connectes them to the head, this makes a membranous pouch, the “trap” of wolftrap, in which the fish holds its prey before swallowing it.

Description

''Lasiognathus saccostoma'' has its dorsal fin supported by 7 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 species in ''Lasiognathus'' are identified from one another by the morphology of their esca and in this species the bulb of the esca has no membrane-like crest on its front. The appendage on the tip has a cylindrical stalk with thin filaments emerging from the front base of the black hooks on the esca. The appendage on the rear of the esca is laterally flattened and rounded and has an irregularly rounded margin and wide base, emerging from under the escal pore. This species has a maximum published

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 saccostoma'' has been recorded in warmer waters of the North Atlantic and northeast Pacific. Specimens have been collected in trawls from depths between >

References

{{Taxonbar, from=Q2400924 saccostoma Fish described in 1925 Taxa named by Charles Tate Regan