this species is distinguished by the following characters: body oval, deep (its depth less than 2.5 times in total length) and strongly compressed; eye surrounded by a small area of adipose tissue; snout short and blunt, lower jaw projecting somewhat beyond upper; mouth small, tip of maxillary not reaching below eye margin; teeth in jaws very small, in one row while those in the upper jaw flattened and with 3 tiny cusps; dorsal and anal fin bases very long (about equal in length), the anterior fin rays elevated, but fins not falcate, and both fins preceded by 3 short, weak, spines; caudal fin deeply forked; pectoral fins long (longer than head) and pointed; pelvic fins absent; distinct series of 17 to 25 pores along anterior half of body under the dorsal fin; lateral line high, following dorsal profile; scales small, present also on cheeks; caudal vertebrae 16 to 18; body color pale blue above, silvery below (fading after death), no spots.