The rose danio (Danio roseus) is a tropical fish of the family Danionidae.

At first glance, this species resembles the pearl danio, but lacks the orange stripe on the side.

It has a rosy colouration along the lower part of the fish and lower fins and gleams purple-blue in sunlight.

It is also commonly known as the purple passion danio.

Its natural range includes the Mekong River drainage in China, Thailand.