One of the hardiest of the barbs, the rosy barb has the typical big mirror-like scales which are doubly enhanced at breeding time. The body of the male develops a flush of bronze, which makes him a handsome fellow indeed.
Other characteristic markings of the rosy barb are a black spot near the tail edged with pale orange, and slightly dark edging to the ventral and anal fins. The flush of colour is very volatile, and nearly visibly melts away after spawning.
A fully grown rosy barb reaches a length of three.5 inch. The male is generally slightly smaller than the female. Sexing is simple at breeding time simply because of the colour of the male and also the fuller body of the female.
The rosy barb breeds at a temperature of 80°F according to the standard description.