The fish has an elongated, cylindrical to compressed body with a greatly elongated lower jaw. The upper jaw is short, triangular, slightly broader than long, and has a mesial keel. Both jaws are lined with villiform teeth arranged in multiple rows. The dorsal fin originates opposite the anal fin, with its base approximately equal to that of the anal fin. The pelvic fins originate about midway between the posterior edge of the eye and the base of the caudal fin. The caudal fin is deeply forked, with the lower lobe longer than the upper lobe. There are 50-52 lateral scales. The body coloration is silvery or yellowish-white, with a brilliant silvery lateral band that is broader towards the rear.