- shad - bony flesh of herring-like fish usually caught during their migration to fresh water for spawning; especially of Atlantic coast
--1 is a kind of fish
--1 is a part of common American shad, Alosa sapidissima- shad - herring-like food fishes that migrate from the sea to freshwater to spawn
--2 is a kind of clupeid fish, clupeid; food fish
--2 is a member of Alosa, genus Alosa
--2 has particulars:common American shad, Alosa sapidissima; river shad, Alosa chrysocloris; allice shad, allis shad, allice, allis, Alosa alosa - shad - herring-like food fishes that migrate from the sea to freshwater to spawn