Wash the fish thoroughly under cold running water and pat dry with a kitchen paper. Set aside.
Preheat the grill to a medium-high heat.
In a medium bowl, combine mint, thyme, parsley, garlic, olive oil, lemon juice, lime juice, chili, and salt. Stir until well combined. Spread the abdominal cavity of the fish and generously brush with the marinade. Finally, brush the fish from the outside and place on a grill.
Grill for 5 minutes on each side, or until crisp. Occasionally, brush the fish with the remaining marinade to keep the juiciness.
Remove from the grill and serve immediately with some low-carb veggies.