Gangetic mystus (Mystus cavasius) fish species and information / pictures of Gangetic mystus - Mystus cavasius

Gangetic mystus (Mystus cavasius) fish species information

Scientific Name
Mystus cavasius

Common Name
Gangetic mystus

Biology
Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal spines: 0; Anal soft rays: 10 - 11. Body elongate and compressed; head conical; occipital process narrow. Maxillary barbels, in adults, extend posteriorly beyond the caudal fin base, but in young specimen, do not extend beyond the anal fin. Dorsal spine weak, often feebly serrated. 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 is just anterior to the first dorsal spine. Dorsal, adipose and caudal fins shaded with melanophores.

Classification

Classified By
Hamilton, 1822
Class
Ray-finned fishes (Actinopterygii)
Order
Catfish (Siluriformes)
Family
Bagrid catfishes (Bagridae)

Distribution

Region
Asia
Distribution
Asia: 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 Mystus albolineatus or Mystus singaringan. Occurs in Thailand, but only in the Salween basin.
Range
5°N - 38°S

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
demersal
Environment
Freshwater; brackish; demersal; amphidromous (Ref. 51243)
Trophic Level
3.43 s.e. 0.46 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
False
Occurs in Brackish water
True
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
40.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: commercial
Vulnerability
Moderate to high vulnerability (51 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 3,314)
Threat To Humans
  Venomous (Ref. 4833)
IUCN Red List Status
  Least Concern (LC)