Mahi are found in warm oceans worldwide, but they are not spread evenly. They gather where there is food and cover. Knowing what to look for helps you spend less time searching and more time catching.
Water temperature
Mahi prefer warm water, generally in the mid 70s °F and higher. Use SST charts and your temperature gauge to find warm water and the edges where it meets cooler water. See using SST charts.
Weed lines
Floating sargassum is the classic mahi habitat. Small fish and crabs live in the weed, and mahi feed on them. Long, defined weed lines are often better than scattered patches. See how to fish weed lines.
Floating debris
Anything floating offshore can hold mahi: boards, pallets, buoys, nets, or logs. Some of the best mahi catches come from a single piece of debris far from anything else.
Birds
Frigate birds are the best mahi indicator. A frigate circling or swooping low often marks mahi below. See reading birds offshore.
Current and color edges
Mahi often travel along current edges and color changes, especially where blue water meets greener water.
How to search
- Check SST charts before leaving to find warm water and edges.
- Run to the area and look for weed, debris, and birds.
- Troll along edges and weed lines at 6 to 9 knots.
- When you find fish, work the area thoroughly.
Seasons
Mahi migrate with warm water. In the western Atlantic, many areas see peak fishing in spring and summer. See best places to catch mahi.
For the dorado basics, read our mahi-mahi (dorado) guide.
