Gymnostomus ariza (Hamilton, 1807)
Reba
photo by Khan, M.M.

Family:  Cyprinidae (Minnows or carps), subfamily: Labeoninae
Max. size:  30 cm SL (male/unsexed); max.weight: 1,360.0 g
Environment:  benthopelagic; freshwater, potamodromous
Distribution:  Asia: Indus plain and adjoining hilly areas (Pakistan); (Ganges-Brahmaputra basin (India, Nepal, Bangladesh); Mahanadi, Krishna, Cuvery, and some smaller basins in southern India; Karnapouli and adjacent smaller basins in Chittagong Hill Tracts (Bangladesh) (Ref. 33488). Reported from Myanmar (Ref. 41236).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 8-9; Vertebrae: 34-35. Body with thin stripes mostly above lateral line; larger fish sometimes with a broad midlateral stripe (not observed in other Cirrhinus. Color in life variable, overall dull dirty white or greyish, silvery or yellow, thin stripes vary from subdued to bold.
Biology:  Found in clear rivers and tanks, ponds, beels, and inundated fields. Feeds on plankton and detritus. Grows fairly rapid. Breeds in flooded shallows from June to September. A prolific breeder, laying about 3 million ova per female. A suitable species for aquaculture. Contributes 10 to 15% of the fishery in Cauvery.
IUCN Red List Status: Least Concern (LC); Date assessed: 21 March 2010 Ref. (130435)
Threat to humans:  harmless


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