Redfish Guide — Grand Isle, LA

Grand Isle sits at the southern tip of Louisiana where Barataria Bay meets the Gulf. It is more exposed than most inshore redfish spots, and that exposure changes how you fish it. Wind and wave action from the Gulf can muddy the water quickly, particularly on the Gulf side of the island. When conditions shift, adjust. The fish are still there. You just have to find them where the water is cleaner and adapt your presentation to what they can see and smell.

The most productive structure at Grand Isle is the same structure that holds redfish throughout coastal Louisiana: marsh grass edges, small inlets, and the base of the jetties. The land side of the island stays calmer and cleaner when Gulf swells are running, and that is where you want to start. Redfish use the grass edges as ambush cover, sitting tight to the vegetation and waiting for bait to move through. Work the edge with a popping cork and live shrimp suspended just above the bottom. The noise draws the fish and the shrimp closes the deal.

One thing worth knowing: redfish and speckled trout often share the same bait schools around Grand Isle structure. The bayou systems east of the island also hold flounder on the same tidal movement. All three species are worth targeting on the same trip. When you find one, you frequently find both. Work a spot thoroughly before moving. If the bait is there, more than one species is likely holding nearby.

Live shrimp is the preferred bait, but not always available. Fresh dead shrimp and cut bait both produce. When water clarity drops from wave action, go to something with more scent and movement. Cut menhaden puts oil in the water fast and holds up in current. If you are throwing artificials in dirty water, switch to darker or more visible colors and anything with vibration or a rattle that fish can locate without relying on sight.

For inshore marsh and jetty fishing, a medium spinning setup handles everything at Grand Isle. The Penn Pursuit IV spinning combo with 15 to 20 lb braid and a fluorocarbon leader in 25 to 30 lb covers both the grass edges and the jetty base. Redfish at the rocks will run for the structure when they feel the hook. The leader needs to handle that pressure.

The best windows are late March through early June and September through October. Water temperatures in the 65 to 78 degree F range keep fish active and feeding on predictable patterns. The spring bite at Grand Isle coincides with bait moving through the area, and the fall bite picks up as fish feed aggressively before water temperatures drop. Wind direction matters more than tide stage at Grand Isle. South and southeast winds push cleaner Gulf water toward the island and keep the marsh side fishable. Strong north winds in fall and winter cool the water fast and push fish out of the shallows. Check the forecast before you make the run.

Louisiana redfish must measure between 18 and 27 inches total length to keep. The daily bag limit is 4 fish per person. The season is open year-round. Always verify current regulations with the Louisiana Department of Wildlife and Fisheries before heading out.

A valid Louisiana fishing license is required for all anglers. Non-resident licenses are available through the Louisiana Department of Wildlife and Fisheries. Visit wlf.la.gov for current license types and fees before your trip.