The blackfin poacher (''Bathyagonus nigripinnis''), also known as the blackfin starsnout poacher in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

, is a fish in the family

Agonidae Agonidae is a family of small, bottom-dwelling, cold-water marine fish. Common names for members of this family include poachers, Irish lords, sea ravens, alligatorfishes, starsnouts, hooknoses, and rockheads. They are notable for having elongate ...

.''Bathyagonus nigripinnis''
at www.fishbase.org. It was described by

Charles Henry Gilbert Charles Henry Gilbert (December 5, 1859 in Rockford, Illinois – April 20, 1928 in Palo Alto, California) was a pioneer ichthyologist and Fisheries science, fishery biologist of particular significance to natural history of the western Unit ...

in 1890.Gilbert, C. H., 1890 (1 July) ef. 1623''A preliminary report on the fishes collected by the steamer Albatross on the Pacific coast of North America during the year 1889, with descriptions of twelve new genera and ninety-two new species.'' Proceedings of the United States National Museum v. 13 (no. 797): 49-126. It is a marine, boreal water-dwelling fish which is known from the northern

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

, including Komandorski Island and Avachin Bay in

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

, St. Mathew Island in the

Bering Sea The Bering Sea ( , ; rus, Бе́рингово мо́ре, r=Béringovo móre, p=ˈbʲerʲɪnɡəvə ˈmorʲe) is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the divide between the two largest landmasse ...

, and

Eureka, California Eureka ( ; Wiyot: ; Hupa: ; ) is a city and the county seat of Humboldt County, located on the North Coast of California. The city is located on U.S. Route 101 on the shores of Humboldt Bay, north of San Francisco and south of the Oreg ...

, USA. It dwells at a depth range of 18–1290 metres, most often at around 400–700 m, and inhabits soft bottoms. It is known to live for a maximum of 9 years. Males can reach a maximum

total length Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured f ...

of 24.2 centimetres, but more commonly reach a TL of 20 cm. The blackfin poacher is preyed on by the sablefish (''Anoplopoma fimbria'') and the Aleutian skate (''Bathyraja aleutica'').Organisms preying on ''Bathyagonus nigripinnis''
at www.fishbase.org.

References

Blackfin poacher Fish described in 1890 Taxa named by Charles Henry Gilbert {{Cottoidei-stub