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  • Mystus rhegma
  • Mystus rhegma
Jump to next section Cat-eLog Data Sheet
Scientific Name Mystus rhegma  Fowler, 1935
Common Name
Type Locality Bangkok, Thailand.
Pronunciation miss tuss
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. 
Jump to next section Species Information
Size 120mm or 4.7" 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.
Sexing Males have an elongate genital papilla in front of the anal fin.
Jump to next section Habitat Information
Distribution Asia: Bangkok, Meklong and Chao Phraya basins in Thailand and Lower Mekong.
Thailand Waters, Meklong (click on these areas to find other species found there)
Thailand Waters, Chao Praya (click on these areas to find other species found there)
Mekong, Lower Mekong (click on these areas to find other species found there)

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IUCN Red List Status Data Deficient
Jump to next section Husbandry Information
Feeding Easily adapts to a wide variety of frozen and prepared food in the aquarium. May eat very small fish.
Breeding Unreported.
Breeding Reports There is no breeding report.
Jump to next section Further Information
References Proc. Acad. Nat. Sci. Phila. v. 87 102 Fig. 27
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Last Update 2014 Jun 18 09:20 (species record created: 2005 Aug 10 00:00)