''Abbottina binhi'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

in the

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

Abbottina ''Abbottina'' is a genus of ray-finned fish belonging to the family Gobionidae, the gudgeons. The fishes in this genus occur in eastern Asia (China, Korea, Japan, and Vietnam). The genus was named for the American zoologist James Fisher Abbott, s ...

''. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the

Bằng River The Bằng River (, zh, 水口河 vietnamese: Thủy Khẩu Hà) is a river of Cao Bằng Province, Vietnam.''Vietnam Administrative Atlas'', Map Publisher, 2004 It flows for 108 kilometres. It originates in the Guangxi, China, flows in the no ...

Cao Bằng Province Cao Bằng is a province of the Northeast region of Vietnam. The province has borders with Hà Giang, Tuyên Quang, Bắc Kạn, and Lạng Sơn provinces within Vietnam. It also has a common international border with Guangxi province in Chi ...

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

. It is only known from its type series.

References

* binhi Fish described in 2001 Endemic fauna of Vietnam {{Gobioninae-stub