''Chirostomias pliopterus'' 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 ...

barbeled dragonfish Stomiidae is a family of deep-sea ray-finned fish, including the barbeled dragonfishes. They are quite small, usually around 15 cm, up to 26 cm. These fish are apex predators and have enormous jaws filled with fang-like teeth. They ar ...

found in the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

. This species grows to a length of SL. This species is the only described member of its genus. This scaleless dragonfish was also the first discovered lifeform to emit a red light, with the second being a

siphonophore Siphonophorae (from Greek ''siphōn'' 'tube' + ''pherein'' 'to bear') is an order within Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. According to the World Register of Marine Species, the order contains 175 specie ...

of the genus ''

Erenna ''Erenna'' is a genus of cnidarians belonging to the family Erennidae. The species of this genus are found in Europe and Northern America and Southeast Asia. Species: *''Erenna cornuta'' *''Erenna insidiator'' *''Erenna laciniata'' *''Erenna ...

''. Later, related

Stomiid Stomiidae is a family of deep-sea ray-finned fish, including the barbeled dragonfishes. They are quite small, usually around 15 cm, up to 26 cm. These fish are apex predators and have enormous jaws filled with fang-like teeth. They are ...

genera ''

Aristostomias ''Aristostomias'' is a genus of barbeled dragonfishes native to the ocean depths in the Pacific, Atlantic and Indian oceans. Red Light Bioluminescence Production of red light bioluminescence Similar to other deep-sea organisms that are capa ...

'', '' Malacosteus'' and ''

Pachystomias ''Pachystomias microdon'', the smalltooth dragonfish, is a species of barbeled dragonfish found in the oceans at depths of from . This species grows to a length of fish measurement, SL. This species is the only known species in its genus. Re ...

'' were also found to emit red light.

References

* Stomiidae Taxa named by Charles Tate Regan Fish described in 1930 Taxa named by Ethelwynn Trewavas {{Stomiiformes-stub