One spot barb is a comparable species to B. conchonius but it has a number of various features that assist to identify it. It grows only to about 2.5 inches long and, unlike B. conchonius, it is not so simple to breed.
The general body colour of the male is a bronze-yellow, it has a spot on its side, positioned above the anal fin, and an additional spot at the root of the tail. An indefinite line links these two spots together. There is also a reddish spot on the gill covers, and also the fins are tinted orange. The female’s body is silver and has hyaline fins.
At breeding time, the body of the male becomes a beautiful orange.