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Gizzard Shad

Gizzard Shad

Gizzard Shad (Dorosoma cepedianum) are non-native forage fish in Utah that have become established in select waters through both accidental introduction and intentional stocking programs.

Scientific Name: Dorosoma cepedianum

Physical Characteristics:

These silvery, deep-bodied fish are characterized by their inferior mouth (positioned underneath their head), gizzard-like muscular stomach, and can grow quite large - reaching 18 inches and several pounds.

What to know

Habitat Distribution

They prefer medium to large rivers, reservoirs, lakes, and quiet open waters with muddy substrates

Key Locations

Willard Bay Reservoir where 1,800 adults were successfully stocked from Nebraska, and in the Colorado River system including Lake Powell and the San Juan River where they were first documented in 2000

Specific Spots

In Utah waters like Willard Bay, focus on shallow areas with muddy bottoms, backwaters, coves, and areas near boat docks or marinas where they feed along the bottom. In the Colorado River system and Lake Powell, they may be found in shallow backwaters and tributary mouths. Look for surface activity, diving birds, or schools of baitfish as indicators of their presence.

Gizzard Shad FAQ

Answers from onWater's species guide.

When is the best time to fish for Gizzard Shad in Utah?

Late spring through fall when they're most active, particularly in the warmer months when water temperatures are stable or rising

How do you catch Gizzard Shad in Utah?

Small jigs tipped with wax worms or pieces of nightcrawler fished near the bottom occasionally produce results, though success rates are generally low with traditional hook-and-line methods.

What do Gizzard Shad eat?

Young gizzard shad feed on phytoplankton and zooplankton in open water, but as adults they become bottom feeders, using their vacuum-cleaner mouths to consume detritus, algae, decaying organic matter, sand, and benthic organisms from muddy lake bottoms.

Where do Gizzard Shad live in Utah?

They prefer medium to large rivers, reservoirs, lakes, and quiet open waters with muddy substrates

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