''Polymixia nobilis'', the stout beardfish, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

beardfish The beardfishes consist of a single extant genus, '' Polymixia'', of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They are classified in their own order Polymixiiformes . But as Nelson says, "few groups have been s ...

. 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 species's

dorsal fin A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through conv ...

has five spines and 34-27 soft rays. The habitat of the fish is in the

benthic zone The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning " ...

References

Polymixiiformes Fish described in 1838 Taxa named by Richard Thomas Lowe {{polymixiiformes-stub