The oblique mouth is terminal, and lacks horny cutting edges. The fins are rather small and rounded, with the pelvic fins being especially notable for their paddle shape. The variations on the basic cyprinid plan seem to be characteristic of desert fishes evolving in isolation, with the body adapting for midwater swimming in quiet water.
The oblique mouth is at the end, lacking horny cutting edges. The fins are relatively small and rounded, with the pelvic fins being particularly noticeable due to their paddle shape. The variations in the basic cyprinid design appear to be typical of desert fish evolving separately, where the body adapts for midwater swimming in calm waters.