''Andriashevia'' is a

monospecific In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of marine

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or hor ...

belonging to the subfamiy Gymnelinae of the family Zoarcidae, the eelpouts, its only species is ''Andriasheevia aptera''. It is found in the northwestern Pacific Ocean, where it occurs off the Pacific coast of Japan. It appears to be a demersal fish which is associated with large red gorgonian corals, e.g. ''

Paragorgia ''Paragorgia'' is a genus of soft coral in the family Paragorgiidae Paragorgiidae is a family of corals, a member of the phylum Cnidaria. Genera Genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of ...

''. Examinations of the stomach contents of collected specimens has shown that its diet is mainly crustaceans but it likely also feeds on encrusting invertebrates which it searches for among coral branches and the hard substrates they live in. This species attains 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 . Unlike other species in the subfamily Gymnelinae, this taxon has no

pectoral 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 ...

s. The genus name honours the

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...

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 ...

Anatoly Petrovich Andriashev Anatoly Petrovich Andriyashev (; 19 August 1910 – 4 January 2009) was a Soviet and Russian ichthyologist, marine biologist, and zoogeographist, notable for his studies of marine fauna of the Arctic and the Northern Pacific. Notable dates * 1 ...

for his work on fishes of the

Russian Far East The Russian Far East (russian: Дальний Восток России, r=Dal'niy Vostok Rossii, p=ˈdalʲnʲɪj vɐˈstok rɐˈsʲiɪ) is a region in Northeast Asia. It is the easternmost part of Russia and the Asian continent; and is admini ...

and especially eelpouts. The specific name, ''aptera'' means "without wings" and refers to the absence of pectoral fins. In 2020 a second species in the genus, ''Andriashevia natsushimae'', was described from

Sagami Bay lies south of Kanagawa Prefecture in Honshu, central Japan, contained within the scope of the Miura Peninsula, in Kanagawa, to the east, the Izu Peninsula, in Shizuoka Prefecture, to the west, and the Shōnan coastline to the north, while the ...

, Japan, but this species was not included in

FishBase FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web.

as at June 2022.

References

{{taxonbar, from1=Q1833916, from2=Q1096523 Gymnelinae Fish described in 1978 Monotypic fish genera