Swordfish Fishing in the Gulf of Mexico
Swordfish are the ultimate overnight deep-drop trophy in the Gulf of Mexico. These massive, powerful billfish are targeted on our 24-hour overnight charter trips from Port Fourchon and Grand Isle, Louisiana — pushing well offshore into the deep blue water where swordfish feed in the depths.
Up to 177"
Maximum Length
1,182 lbs
Max World Record Weight
9 yrs
Average Lifespan
Year-Round
Best: Spring/Fall
Swordfish Biology & Identification
Swordfish (Xiphias gladius) are among the most iconic and sought-after billfish in the world. They are identified immediately by their long, flat, sword-like bill (rostrum) — much longer and flatter than that of marlin or sailfish. The body is sleek and powerful with a large, crescent-shaped tail and a single prominent keel on each side near the tail. Adults are brownish-black on the back fading to lighter, cream-colored sides and belly. Swordfish lack scales as adults and have very rough skin. Unlike most billfish, swordfish have a retinal heating system that warms their eyes and brain, allowing them to dive into very cold, deep water in pursuit of prey. In the Gulf of Mexico, swordfish commonly range from 50 to 300 pounds, with exceptional fish exceeding 500 pounds.
Swordfish Habitat & Behavior in the Gulf of Mexico
Swordfish are highly migratory, pelagic predators found in all major ocean basins. In the Gulf of Mexico, they are associated with deep water — typically 1,000 to 2,000+ feet — and are regularly caught in offshore waters south of Port Fourchon and Grand Isle. Swordfish are unique in their diel vertical migration pattern: they spend the night feeding near the surface, following squid and other prey into the shallower water column, then dive to extreme depths during the day. This behavior makes nighttime deep dropping the most productive technique. During the day, swordfish can be found at depths of 1,000 feet or more. The Gulf of Mexico Loop Current and deep canyon features concentrate swordfish activity in certain areas known to our experienced captains.
How to Target Swordfish on Overnight Trips from Port Fourchon
Nighttime deep dropping is the primary swordfish technique in the Gulf of Mexico. We use electric reels on heavy conventional outfits — 130 lb class rigs with 200–300 feet of heavy leader — to deploy large whole squid, mackerel, or bonito baits down to 800–1,500 feet at night. High-intensity squid lights attract bioluminescent organisms, which in turn attract swordfish to the surface. A proper presentation keeps the bait drifting in the current column at the right depth, detected by sophisticated strike detection systems. Fighting a large swordfish on this gear is a full team effort lasting 45 minutes to over 2 hours. Daytime deep dropping is also legal and can produce sword when conditions are right. Our 24-hour overnight swordfish trips leave from Port Fourchon Marina and push far offshore to proven swordfish grounds.
Swordfish Regulations in the Gulf of Mexico
Swordfish in the Gulf of Mexico are federally managed by NOAA Fisheries and the Atlantic Highly Migratory Species Management Division. A federal swordfish permit is required to retain swordfish, and American Gulf Fishing Charters holds the appropriate permits. The minimum size for swordfish is 47 inches lower jaw fork length. Bag limits and quotas apply — check current NOAA regulations. Swordfish are an excellent eating fish — firm, dense, steak-like flesh that holds up to grilling, broiling, and searing. Proper bleeding and icing immediately after the catch is essential for the best meat quality.
Target Swordfish Out of Grand Isle & Port Fourchon, LA
Book your offshore fishing charter with American Gulf Fishing Charters. Private boat, federal reef permits, all gear included, up to 6 anglers. Departing from Port Fourchon Marina and Grand Isle, Louisiana.