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 usually reaches a maximum length of , although some individuals can grow up to . The back is typically a dark olive green color, while the sides are silvery with a distinctive dark stripe that runs from the gill cover to the tail, adding visual interest.