''Filimanus'' is a genus of marine ray-finned fishes, threadfins from the family

Polynemidae Threadfins are silvery grey perciform fish of the family Polynemidae. Found in tropical to subtropical waters throughout the world, the threadfin family contains eight genera and about 40 species. An unrelated species sometimes known by the name ...

Features

The fishes of the genus ''Filimanus'' have a body which is oblong to moderately deep and compressed. They have a well developed adipose eyelid and the diameter of the eye is longer than the length of the snout. They have a well developed lip on their lower jaws and the teeth on the

dentary bone In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower teeth in place. The mandible sits beneath the maxilla. It is the only movable bone ...

are restricted to its dorsal surface. There are narrow bands of villiform teeth on their jaws,

palatine bone In anatomy, the palatine bones () are two irregular bones of the facial skeleton in many animal species, located above the uvula in the throat. Together with the maxillae, they comprise the hard palate. (''Palate'' is derived from the Latin ''pa ...

and ectopterygoids. The rear joint of the mouth extends past the level of rear margin of the adipose eyelid. The rear margin of the gill cover is serrated. They have two dorsal fins with the first dorsal fin having 8 spines and the second dorsal fin has a single spine and 11 to 13 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 ...

has 3 spines and 10 to 15 soft rays. The base of the anal fin is shorter than the length of the head. The pectoral fin contains 13 to 16 unbranched rays and it is placed below the midline of body. The caudal fin is deeply forked but its lobes do not have filaments.

Distribution and habitat

''Filimanus'' species are found in the Indian and western Pacific Ocean, where they are found in waters of depths of in depth over sandy and muddy substrates, often found in estuaries.

Species

The following species are classified as within the genus ''Filimanus'': * ''

Filimanus heptadactyla ''Filimanus'' is a genus of marine ray-finned fishes, threadfins from the Family (biology), family Polynemidae. Features The fishes of the genus ''Filimanus'' have a body which is oblong to moderately deep and compressed. They have a well develo ...

'' (

Cuvier Jean Léopold Nicolas Frédéric, Baron Cuvier (; 23 August 1769 – 13 May 1832), known as Georges Cuvier, was a French naturalist and zoologist, sometimes referred to as the "founding father of paleontology". Cuvier was a major figure in nat ...

, 1829) (Sevenfinger threadfin) * ''

Filimanus hexanema ''Filimanus'' is a genus of marine ray-finned fishes, threadfins from the family Polynemidae. Features The fishes of the genus ''Filimanus'' have a body which is oblong to moderately deep and compressed. They have a well developed adipose eyelid ...

'' (

1829) (Javanese threadfin) * '' Filimanus perplexa'' Feltes 1991 (Splendid threadfin) * ''

Filimanus sealei ''Filimanus'' is a genus of marine ray-finned fishes, threadfins from the family Polynemidae. Features The fishes of the genus ''Filimanus'' have a body which is oblong to moderately deep and compressed. They have a well developed adipose ey ...

'' ( Jordan &

Richardson Richardson may refer to: People * Richardson (surname), an English and Scottish surname * Richardson Gang, a London crime gang in the 1960s * Richardson Dilworth, Mayor of Philadelphia (1956-1962) Places Australia * Richardson, Australian Cap ...

, 1910) (Eightfinger threadfin) * ''

Filimanus similis ''Filimanus'' is a genus of marine ray-finned fishes, threadfins from the Family (biology), family Polynemidae. Features The fishes of the genus ''Filimanus'' have a body which is oblong to moderately deep and compressed. They have a well develo ...

'' Feltes 1991 (Indian sevenfinger threadfin) * ''

Filimanus xanthonema ''Filimanus'' is a genus of marine ray-finned fishes, threadfins from the family Polynemidae. Features The fishes of the genus ''Filimanus'' have a body which is oblong to moderately deep and compressed. They have a well developed adipose eyelid ...

'' ( Valenciennes, 1831) (Yellowthread threadfin)

Type species

''Filimanus'' was described as new genus by George S. Myers in 1936 with its only species being based on a single

specimen Specimen may refer to: Science and technology * Sample (material), a limited quantity of something which is intended to be similar to and represent a larger amount * Biological specimen or biospecimen, an organic specimen held by a biorepository ...

which he identified as '' Polynemus melanochir'' but which was subsequently found to be a misidentification and ''P. melanochir'' is a valid species now classified in the genus '' Polydactylus'' which meant that Myers specimen remained undescribed. Subsequently Ross M. Feltes described it as ''Filimanus perplexa'' and added 5 other species to this new genus. Opinion 1761 of the

International Commission on Zoological Nomenclature The International Commission on Zoological Nomenclature (ICZN) is an organization dedicated to "achieving stability and sense in the scientific naming of animals". Founded in 1895, it currently comprises 26 commissioners from 20 countries. Orga ...

confirmed ''F. perplexa'' as the type species of Myers's genus.

References

{{Taxonbar, from=Q2472265 Polynemidae Taxa named by George S. Myers Ray-finned fish genera