Combine three tablespoons lime juice and crushed garlic in a bowl. Add mahi mahi and toss gently. Allow to marinate for 15 to 45 minutes while you make the salsa.

Combine the strawberries, onion, jalapeno, cilantro, avocado, remaining lime juice and 1/4 teaspoon salt in a small glass bowl. Cover and chill while you prepare the rest of your meal.

Heat a large skillet with olive oil over medium heat. Arrange fish in a single layer in the pan, reserving marinade. Season tops of fish with pepper and remaining 1/8 teaspoon salt. Cover pan and cook for five minutes. Turn fish and add in reserved marinade. Cover and cook five more minutes, until cooked through.

Serve fish with salsa on the side.