Body sub-cylindrical, belly rather rounded (but more compressed in juveniles). Pointed snout, terminal mouth, and smooth, easily detached scales. A key identification feature is the operculum (gill cover), which has visible striations. The dorsal fin is positioned slightly forward of the middle of the body, and the pelvic fins are located behind the dorsal fin.
It looks like Sardinops caeruleus (Pacific sardine/California pilchard), Sardinops ocellatus (Southern African pilchard/South African sardine), and Sardinops melanostictus (Japanese pilchard), as they are often grouped with Sardina pilchardus under the general term “sardine” and can be difficult to distinguish without genetic analysis.