Body shape : Elongate and laterally compressed
Average size : 38 cm (15 in), 1 kg (2 lb)
Coloration : Green-brown to black back (varies with habitat); silvery flanks.
External characteristics : Small mouth with snout extending beyond lower jaw; large scales; adipose fin far beyond dorsal fin; dorsal and pelvic fins at mid-body length; pronounced forked caudal fin.
