Any one of several species of food fishes of the Herring family. The American species (Clupea sapidissima), which is abundant on the Atlantic coast and ascends the larger rivers in spring to spawn, is an important market fish. The European allice shad, or alose (C. alosa), and the twaite shad. (C. finta), are less important species.
- Any of several food fishes of the genus Alosa, especially the North American species A. sapidissima, related to the herrings but atypical in swimming up streams from marine waters to spawn.