This species typically reaches only  in length, although some are as long as . The back is generally a dark olive green, while the sides are silvery, with a dark line extending from gill cover to tail, and a scattering of dark melanophores.
This species typically grows to a maximum size of , although some specimens can reach lengths of . The dorsal surface is generally a dark olive green, while the lateral sides are silvery with a dark stripe running from the gill cover to the tail, and scattered dark melanophores.