''Liobagrus aequilabris'' 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), ...

catfish Catfish (or catfishes; order (biology), order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Catfish are common name, named for their prominent barbel (anatomy), barbels, which resemble a cat's whiskers, though not ...

in the family

Amblycipitidae The Amblycipitidae are a family of catfishes, commonly known as torrent catfishes. It includes three genera, '' Amblyceps'', '' Liobagrus'', and '' Xiurenbagrus'', and about 36 species. Taxonomy The family Amblycipitidae is a monophyletic group ...

(the torrent catfishes). This species 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 ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

, where it is only known from the

Xiang River The Xiang River is the chief river of the Lake Dongting drainage system of the middle Yangtze, the largest river in Hunan Province, China. It is the second-largest tributary (after the Min River) in terms of surface runoff, the fifth-largest ...

, a tributary of the

Yangtze River The Yangtze or Yangzi ( or ) is the longest river in Eurasia and the third-longest in the world. It rises at Jari Hill in the Tanggula Mountains of the Tibetan Plateau and flows including Dam Qu River the longest source of the Yangtze, i ...

, in

Guangxi Guangxi,; officially the Guangxi Zhuang Autonomous Region, is an Autonomous regions of China, autonomous region of the China, People's Republic of China, located in South China and bordering Vietnam (Hà Giang Province, Hà Giang, Cao Bằn ...

province, but may also be present in the

Li River The Li River or Li Jiang ( zh, c=漓江, p=Lí Jiāng) is the name for the upper reaches of the Gui River in northeastern Guangxi, China. It is part of the Xijiang River system in the Pearl River basin, flowing from Xing'an County to Pingle C ...

, a tributary of the

Pearl River The Pearl River (, or ) is an extensive river system in southern China. "Pearl River" is often also used as a catch-all for the watersheds of the Pearl tributaries within Guangdong, specifically the Xi ('west'), Bei ('north'), and Dong ( ...

, due to the presence of the

Lingqu Canal The Lingqu () is a canal in Xing'an County, near Guilin, in the northwestern corner of Guangxi, China. It connects the Xiang River (which flows north into the Yangtze) with the Li River (Guangxi), Li River (which flows south into the Gui ...

connecting the Xiang and Li Rivers. ''L. aequilabris'' reaches a length of SL. It differs from other members of its genus in lacking large, retrorse serrations on the posterior edge of the pectoral-fin spine, having upper and lower jaws of equal length, relatively long

dorsal Dorsal (from Latin ''dorsum'' ‘back’) may refer to: * Dorsal (anatomy), an anatomical term of location referring to the back or upper side of an organism or parts of an organism * Dorsal, positioned on top of an aircraft's fuselage The fus ...

(7.5-10.2 % of SL) and pectoral-fin (9.1-12.1 % of SL) spines, a relatively long

caudal fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only ...

(20.1-26.9 % of SL), and relatively few post- Weberian vertebrae (35-37).

References

Liobagrus Endemic fauna of Guangxi Freshwater fish of China Catfish of Asia Fish described in 2008 {{catfish-stub