Clupea sprattus, sprat, brisling - small herring processed like a sardine

herring - valuable flesh of fatty fish from shallow waters of northern Atlantic or Pacific; usually salted or pickled

Clupea, genus Clupea - type genus of the Clupeidae: typical herrings

sardine - any of various small edible herring or related food fishes frequently canned

brisling, sprat - small fatty European fish; usually smoked or canned like sardines