Flounder Guide — Mississippi Gulf Coast

Flounder on the Mississippi Gulf Coast are not hard to find once you understand how they think. They are ambush fish that live on the bottom, and they do not chase bait across open water. They pick a spot, bury into the sand or mud, and wait for something to swim close enough to eat. Your job is to find that spot and put the bait in front of them.

The best spots are any kind of hard structure over soft bottom. Natural holes and cuts in the bay, canal edges, and anything built over the water. Pier pilings concentrate flounder because they create shadow, current breaks, and a place for baitfish to hold. A covered pier is even better. The shade holds bait longer, and the flounder know it. If you find a public covered pier that is not crowded, there is a reasonable chance multiple flounder are sitting underneath it right now. Work it slowly and methodically before you move on.

The approach is simple. Cast under the corners of the structure and let the rig hit bottom. Then wait. Do not move it much. Flounder are not going to chase a bait moving fast across the surface. They are burrowed in the mud looking up. A live shrimp sitting near the bottom on a short 6 to 8 inch fluorocarbon leader is as close to a guaranteed bite as you will find on these fish. Finger mullet can work, but live shrimp is the preferred bait. If the corners of one piling do not produce in a few minutes, move to the next and work around the entire structure before you decide the fish are not there.

One thing that trips people up is that you cannot fish for flounder the same way you fish for reds or specks. Those fish will move to the bait. Flounder will not. If you are casting light rigs and working a retrieve, you might pick one up by accident. But to target a large flounder you need more weight to pin the bait on the bottom, a shorter leader, and the patience to leave it there. The setup is different and the mindset is different.

Gear matters more for flounder than most inshore fish. A reliable medium spinning combo like the Ugly Stik Inshore Select handles the presentation well, but do not fish light line near structure. A big flounder will jerk hard at the surface when it comes up, and the flat body shape puts more lateral stress on the line than a round fish of the same weight. Use heavier fluorocarbon than you think you need. You will not regret it.

There was one under a pier I fished for years as a kid. The pier sat over a natural channel and I knew exactly where the channel ran. That fish was always there. I could get it to bite but I could never land it. It would snap the line at the top of the water every single time, and I just kept going back with the same setup thinking eventually it would work out differently. It never did. That fish probably died of old age in the same channel it lived its whole life. The lesson took longer than it should have to learn, but it is the same one every time. The fish is not the problem. The setup is.

Flounder are active in the same water temperature range as reds and specks. Spring and fall are the best windows, but you can find them in summer and winter if you slow down and fish the structure more carefully. Cold water makes them slower and more committed to a spot. Hot water makes them less aggressive but they are still there. The fish do not disappear, they just require more patience.

For a more detailed look at specific Mississippi structure, the Back Bay Biloxi flounder guide covers the Biloxi bulkheads and bridge pilings in depth.

Mississippi flounder must measure 12 inches total length to keep, with a daily bag limit of 10 fish. Always verify current regulations with the Mississippi Department of Marine Resources before heading out.