The American shad ( Alosa sapidissima ), formerly found only on the Atlantic c.... shad ),

The American shad ( Alosa sapidissima ), formerly found only on the Atlantic coast from Florida to Newfoundland, was introduced into the Pacific Ocean in 1871 and now ranges from San Diego to British Columbia. Young shad hatch in 6 to 15 days, enter the sea in fall, and mature in about three years. Other fishes known as shad and having similar life cycles are those of the genera Caspialosa of the Black and Caspian seas, and Hilsa , which range from East Africa to China. The gizzard shads ( Dorosoma ), of both marine waters and freshwaters, have a muscular stomach and filamentous last dorsal fin rays. cepedianum ), also called hickory shad and fall herring, ranges through the southern United States. shad ),