How Long to Cook Mahi-Mahi Fillets (Skinless, 6–8 oz) in the grill
Specification: 6–8 oz skinless fillets, ~1-inch thick, oiled and seasoned just before grilling
3-Step Execution Protocol
Preheat grill to Medium-high direct, 450°F (232°C), grates clean and oiled. Clean and oil grates. Prepare mahi-mahi fillets (skinless, 6–8 oz) (6–8 oz skinless fillets, ~1-inch thick, oiled and seasoned just before grilling).
Cook for 6–9 mins (3–4 min per side, thickness driven). Flip at the 4-minute mark for even browning.
A cake tester slid into the thickest part comes out warm on the lip, and the flesh flakes into large moist pieces rather than shreds. Confirm internal temperature reaches 130°F–137°F pull (FDA safe target is 145°F; chef standard is 130–137°F for moisture). Rest for 2 minutes before serving.
FDA safe cooking temperature for finfish is 145°F to opaque-and-flaking; the 130–137°F pull range for mahi is the standard chef target used by Cook's Illustrated and Serious Eats to avoid the chalky texture that sets in above 140°F.