- For the fish marinade, add soy sauce, sesame oil, brown sugar, chopped garlic, and 1 tablespoon of lime juice into a small bowl and stir until sugar dissolves.
- Place fish fillets in a flat-bottomed dish and pour over half the sauce. Turn the fillets in the dish and pour over the other half of the sauce.
- Allow fish to marinate for at least 10 minutes while you warm up the grill. Just make the grill hot, but not blazing.
- Lightly brush grill with a little cooking oil, then grill the fish for 5 to 8 minutes per side, or until the fish flakes easily and the inner flesh is no longer translucent. Avoid turning fish too soon.
- Combine all the salsa ingredients and spoon over the fish before serving.