In a small bowl, combine tequila, lemon juice, zest, garlic, salt, pepper and cilantro.
Place fish in a baking dish. Brush with tequila mixture. Marinate in the refrigerator for 20 minutes.
Preheat the grill to medium-high.
Place fish on a well-oiled grill and cook for about 6 minutes. Flip over and repeat, cooking until done.
Contributed by Joyce Taylor