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Down arrow Cat-eLog Data Sheet
Scientific Name Mystus cavasius  (Hamilton, 1822)
Common Name Gangetic Mystus
Type Locality Gangetic provinces [Atrau River], India.
Synonym(s) Bagrus cavasius, Hypselobagrus nigriceps, Macrones cavasius, Macrones nigriceps, Mystus mukherjii, Pimelodus cavasius
Pronunciation miss tuss - cah vah see uss
Etymology The generic name is probably derived from the Latin mystax, meaning moustache, in reference to the long barbels. It was first used by Scopoli in 1777 making it a very old genus that has included many catfishes from throughout the world at one time or another. The specific epithet comes from the local name of the fish (kavasi).
Down arrow Species Information
Size 400mm or 15.7" SL. Find near, nearer or same sized spp.
Identification Fishes of the genus Mystus Scopoli are small to medium-sized bagrid catfishes occurring in South Asia. Roberts (1994) recognized Mystus to have an elongate cranial fontanel reaching up to the base of the occipital process, long maxillary barbel, very long adipose fin, 11–30 gill rakers on the first gill arch and 37–46 total vertebrae, about equally divided between abdominal and caudal regions. He included only eight species under the genus. Mo (1991) characterized the genus to have a thin needle-like first infraorbital, twisted and thickened metapterygoid loosely attached to the quadrate by means of ligament or a small extent of cartilage. Jayaram & Sanyal (2003) and Ferraris (2007) respectively listed 44 and 33 species of Mystus as valid.

Maxillary barbels, in adults, extend posteriorly beyond the caudal fin base, but in young specimen, do not extend beyond the anal fin. Color is grayish with a more or less well-defined midlateral longitudinal stripe. A dark spot emphasized by a white or pale area along its ventral margin located just anterior to the first dorsal spine.
Sexing Males have an elongate genital papilla in front of the anal fin.
Down arrow Habitat Information
Distribution Lowland rivers in most major basins of the Indian subcontinent (Pakistan, Nepal, India, Sri Lanka and Myanmar), including but not limited to the Indus, Brahmaputra-Ganges, Krishna, Cauvery, Irrawaddy, Salween and Tenasserim. Reports of this species from the Chao Phraya and Mekong basins, Malaysia, and Indonesia are based on misidentifications of M. albolineatus or M. singaringan. Occurs in Thailand, but only in the Salween basin.
Pakistan Waters, Indus (click on these areas to find other species found there)
Indian waters, North Eastern India Waters, Padma, Jamuna, Brahmaputra (click on these areas to find other species found there)
Indian waters, North Eastern India Waters, Padma, Ganges (click on these areas to find other species found there)
Salween (click on these areas to find other species found there)
Myanmar Waters, Irrawaddy (click on these areas to find other species found there)
Myanmar Waters, Tenasserim (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2009.
pH 6.0 - 7.0
Temperature 20.0-27.0°C or 68-80.6°F (Show species within this range)
Down arrow Husbandry Information
Feeding Easily adapts to a wide variety of frozen and prepared food in the aquarium. Will eat small fishes. €
Furniture Provide plenty of driftwood and vegetation as hiding spaces.
Compatibility Somewhat territorial; should only be kept with other large, robust fishes. Ideal tankmates include larger cyprinids (such as Osteochilus and Labiobarbus), and larger spiny eels (Mastacembelus spp.).€
Breeding Not reported.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference An account of the fishes found in the river Ganges, pp 203, 379, Pl. 11 (fig. 67).
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Last Update 2019 Sep 25 13:09 (species record created: 2003 Jun 12 00:00)