The gizzard shad is a forage species found throughout much of North America. They are named for their gizzard-like stomach. Gizzard shad are also known as mud shad.
Adults grow up about 18 inches in length. They are usually dark gray above, silver on the sides, with a white belly, and a large dark spot behind the upper end of the gill cover. The last ray of the dorsal fin is elongated into a long, slender filament.
Unlike threadfin shad, the gizzard shad’s upper jaw does not project beyond the lower jaw.
Gizzard shad are common in rivers and reservoirs where they are often seen at the surface. They are sometimes introduced into waterways, mainly due to their value as a forage species.
Gizzard shad are prone to die-offs, especially in late winter or early spring when they enter shallow water to feed.
Gizzard shad are frequently harvested for bait using cast nets or seines. They are also taken by alternative fishing methods.