Scientific Name
Dorosoma petenense
Other Names
Yellowfin shad, Yellowtail, and Shad
Description
Threadfin shad are similar to gizzard shad. They have a silver-blue back that changes to nearly white on their sides and belly. All fins have a yellow tint, except the dorsal fin. A black oval or round spot is located behind the head. Adults are considerably smaller than gizzard shad adults, rarely exceeding 7 inches in length.
Habits and Habitat
Threadfin shad are abundant in most of Mississippi’s rivers, streams, lakes, and reservoirs. They filter feed heavily on suitably sized plant and animal material with phytoplankton and algae making up most of the diet. Spawning begins in late spring when water temperatures reach approximately 70°F, and may continue into the summer. Spawning occurs from dawn to shortly after sunrise and the eggs are released near brush, vegetation or logs where they sink to the bottom and attach to plants and other objects. Natural hybrids with gizzard shad are not uncommon.
State Record
No record exists at this time.
Fishing Fact
Because of their smaller size, threadfin shad are often stocked as supplemental forage for gamefish. Threadfin shad cannot survive water temperatures below 40ºF to 45°F. Winter die-offs, especially in shallow lakes and reservoirs, are common.