''Erethistoides'' is a

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 ...

of South Asian river catfishes.

Species

There are currently 10 recognized species in this genus:Ng, H.H., Ferraris, C.J.Jr. & Neely, D.A. (2012): ''The catfish genus'' Erethistoides ''(Siluriformes: Sisoridae) in Myanmar, with descriptions of three new species.'' Zootaxa, 3254: 55–68. * '' Erethistoides ascita'' H. H. Ng & Edds, 2005 * '' Erethistoides cavatura'' H. H. Ng & Edds, 2005 * '' Erethistoides infuscatus'' H. H. Ng, 2006 * '' Erethistoides longispinis'' H. H. Ng,

Ferraris Ferrari S.p.A. (; ) is an Italian luxury sports car manufacturer based in Maranello. Founded in 1939 by Enzo Ferrari (1898–1988), the company built Auto Avio Costruzioni 815, its first car in 1940, adopted its current name in 1945, and be ...

& Neely, 2012 * '' Erethistoides luteolus'' H. H. Ng,

& Neely, 2012 * '' Erethistoides montana''

Hora Hora may refer to: Companies * Hora (company), a Romanian manufacturer of stringed musical instruments People, real & mythological * Hora (pl. Horae), figure from Greek mythology * Hora (surname) * Hora, a member of the Japanese duo Schwarz St ...

, 1950 * '' Erethistoides pipri''

, 1950 * '' Erethistoides senkhiensis'' Tamang,

Chaudhry Chowdhury (also: Choudhuri, Chaudhuri, Choudhury, Chaudhri, Chaudhary) is a title of honour, usually hereditary, originating from the Indian subcontinent. It is an adaption from Sanskrit. During the Mughal rule, it was a title awarded to emine ...

Choudhury Chowdhury (also: Choudhuri, Chaudhuri, Choudhury, Chaudhri, Chaudhary) is a title of honour, usually hereditary, originating from the Indian subcontinent. It is an adaption from Sanskrit. During the Mughal rule, it was a title awarded to emine ...

, 2008 * '' Erethistoides sicula'' H. H. Ng, 2005 * '' Erethistoides vesculus'' H. H. Ng,

& Neely, 2012

Distribution and habitat

This genus is known from the sub-

Himalaya The Himalayas, or Himalaya ( ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the Earth's highest peaks, including the highest, Mount Everest. More than 100 pea ...

n region of the

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

n subcontinent. They are found in the

Brahmaputra The Brahmaputra is a trans-boundary river which flows through Southwestern China, Northeastern India, and Bangladesh. It is known as Brahmaputra or Luit in Assamese, Yarlung Tsangpo in Tibetan, the Siang/Dihang River in Arunachali, and ...

and

Meghna The Meghna () is one of the major rivers in Bangladesh, one of the three that form the Ganges Delta, the largest delta on earth, which fans out to the Bay of Bengal. A part of the Surma-Meghna River System, the Meghna is formed inside Bangladesh ...

drainages, northern

and

Nepal Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked country in South Asia. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain. It borders the Tibet Autonomous Region of China Ch ...

Description

''Erethistoides'' is distinguished from all other erethistids by having the anterior margin of the

pectoral fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish aquatic locomotion, swim. Apart from the tail or caudal fin, fish fins have no direct connection with the vertebral column ...

spine with

serration Serration is a saw-like appearance or a row of sharp or tooth-like projections. A serrated cutting edge has many small points of contact with the material being cut. By having less contact area than a smooth blade or other edge, the applied pr ...

s directed toward the tip of the spine distally, and away from the tip proximally; however, the use of this as a diagnostic character has been questioned as some specimens of '' Erethistes filamentosa'' also show this trait. They also lack a

thoracic The thorax (: thoraces or thoraxes) or chest is a part of the anatomy of mammals and other tetrapod animals located between the neck and the abdomen. In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main ...

adhesive apparatus present in some other erethistids, and a smooth to granulate anterior margin on the

dorsal fin A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found ...

spine, moderate

gill A gill () is a respiration organ, respiratory organ that many aquatic ecosystem, aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow r ...

openings that extend to the underside of the fish, a

papilla Papilla (Latin, 'nipple') or papillae may refer to: In animals * Papilla (fish anatomy), in the mouth of fish * Papilla (worms), small bumps on the surface of certain worms * Basilar papilla, a sensory organ of lizards, amphibians and fish * ...

te upper lip, and 9–11

anal 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 o ...

rays. The head is depressed and triangular, and the body is elongate and compressed. The eyes are small to moderate and are placed dorsolaterally in the posterior half of the head. The pectoral fin spine is serrated anteriorly and posteriorly. The dorsal fin spine is serrated posteriorly but not anteriorly.

References

Erethistidae Fish of South Asia Catfish genera Freshwater fish genera Taxa named by Sunder Lal Hora {{catfish-stub