Harlequin rasbora of a harlequin. The harlequin rasbora is a fish that has an approximately lozenge-shaped body, whose basal colour from the head to the caudal peduncle is an orange-pink, the exact hue varying depending upon such factors as water conditions and the original population from which the fish was obtained. The posterior half of the body is overlaid with a large, roughly triangular black marking, that tapers toward the terminal end of the caudal peduncle, and begins approximately below the midpoint of the attachment of the dorsal fin (commonly called a "black wedge"). In common with all cyprinids, the articulation of
Nemipterus randalli back fading silvery-pink on the belly, there are four pale yellow longitudinal stripes on the flanks, the upper stripe starts at eye level and runs to caudal peduncle. The other three stripes are close to each other and there is a yellow spot on the cheek and another on the operculum. They grow to a maximum length of 30 cm but are normally 5–20 cm. The dorsal fin is pale bluish in colour with a red margin and yellow markings clustered towards the base, the caudal fin also has a red margin. "Nemipterus randalli" is native to the western Indian