Prefers to inhabit fast flowing streams with a rock or pebble substrate . Found usually browsing among pebbles in shallow, flowing water. Can ascend steep inclines and also occurs in even the highest mountain streams .
Dorsal soft rays (total): 11; Anal soft rays: 8. Schistura notostigma differs from all congeners from peninsular India and Sri Lanka by the combination of the following characters: 6-7 wide, brown bars on the posterior half of the body; width of interspaces equal ½-1 times the width of the bars; black bar on caudal-fin base complete, narrower than the width of the interspaces on the body; emarginate caudal fin; incomplete lateral line ending beneath the dorsal-fin base; adpressed pelvic fin surpassing the anus; 7½ branched rays on dorsal fin; pelvic-fin origin beneath first branched dorsal-fin ray; 4-8 pre-operculo-mandibular pores; and suborbital flap in males absent .: elongated.
Behavioural data for Spotback loach is currently being reviewed.
Diet information for Spotback loach is currently being compiled.
Reproduction data for Spotback loach is currently being compiled.
Freshwater; benthopelagic; pH range: 6.0 - 8.0; dH range: 5 - 12. Tropical; 22°C - 24°C ; 7°N - 6°N endemic to Sri Lanka.
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