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" Rough Fish Identification "

Shad

American shad are anadromous fish, meaning they spend most of their lives in saltwater but spawn in freshwater. Shad are found along the Atlantic seaboard from Labrador to Florida. Shad are an important food source for other fish such as bluefish and striped bass.

Rising spring temperatures prompt shad to leave the ocean and return to the waters in which they were born. Biologists believe the fish find their natal streams through their uncanny sense of smell. Males arrive on the spawning grounds first, followed by egg-laden females. A female releases 100,000 to 600,000 eggs into the water to be fertilized by several males. Adult shad return to the ocean soon after spawning.

The transparent fertilized eggs are carried along by the current. The larvae hatch in 4 to 12 days. Juvenile shad spend their first summer in freshwater. By autumn, the young shad gather in schools and swim to the ocean. They will live in the ocean from three to six years, until sexually mature then return to freshwater to complete their life cycle. This sustained a thriving shad population for centuries, but this changed as America prospered.