Found in relatively deep (1-2 m) fast-flowing water, in areas with gravel or sand substrates, the Asoka barb is a species of cyprinid fish endemic to Sri Lanka. It is found in the upper reaches of the Sitawaka River and its tributaries, and Kelani near Kitulgala. This fish can reach a length of 17 centimetres (6.7 in) in total length.

Asoka barbs usually occupy unshaded areas. They are fast swimmers and are not easily identified from water surface. This species can be found in freshwater which has 6.5–7.5 pH range and 25–30 °C (77-86 °F) temperature.

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