The Black-line Rasbora (Rasbora daniconius) is a benthopelagic and potamodromous species. It occurs in a variety of habitats: ditches, ponds, canals, streams, rivers and inundated fields, but is primarily found in sandy streams and rivers. It is also found in brackish waters. It sometimes forms large schools. It is found in the rivers of Maharashtra and Karnataka in India. The body is oblong and compressed. The greatest width of the head equals its post-orbital length. It is about 400 mm in size.
In adult stage the black line in his lateral body are feint and the silver color in his body have light pinkish in color.