''Polymixia'' is the only

extant Extant is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Extant taxon, a taxon which is not extinct, ...

genus of the

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 ...

Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, Indian and western Pacific Oceans. They are bottom-dwelling fish, found down to about . Most are relatively small fish, although one species is over in length.

Classification

There are currently 10 recognized species in this genus: * ''

Polymixia berndti ''Polymixia berndti'' is a species of beardfish found in the Indian and Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean ...

'' C. H. Gilbert, 1905 (Pacific beardfish) * ''

Polymixia busakhini ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' Kotlyar, 1993 (Busakhin's beardfish) * '' Polymixia fusca'' Kotthaus, 1970 * ''

Polymixia japonica ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' Günther, 1877 (Silver eye) * ''

Polymixia longispina ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' S. M. Deng, G. Q. Xiong & H. X. Zhan, 1983 * ''

Polymixia lowei ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' Günther, 1859 (Beardfish) * ''

Polymixia nobilis ''Polymixia nobilis'', the stout beardfish, is a species of beardfish. This species can grow over TL. ''P. nobilis'' lives on both sides of the Atlantic Ocean on gravel and sandy bottoms. Scientists do not know how they behave or reproduce. The ...

'' R. T. Lowe, 1838 (Stout beardfish) * ''

Polymixia salagomeziensis ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' Kotlyar, 1991 * ''

Polymixia sazonovi ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' Kotlyar, 1992 * ''

Polymixia yuri ''Polymixia'' is the only extant genus of the order Polymixiiformes and the only genus in Polymixiidae. It contains 10 species, all of which live in deepwater marine environments. They are found in tropical and subtropical waters of the Atlantic, ...

'' Kotlyar, 1982

References

Polymixiiformes Extant Late Cretaceous first appearances Ray-finned fish genera {{Polymixiiformes-stub