Marinate fish in 1/2 cup of the Mrs. Dash® Lime Garlic Marinade for at least 10 minutes. Remove fish from marinade, discarding marinade. Heat a large non-stick skillet over medium heat. Cook tortillas about 1 minute per side or until lightly browned and slightly puffy. Wrap in foil and keep warm. Add fish, corn, peppers and onion to skillet. Cook and stir until fish is cooked through and breaks into small pieces and vegetables are crisp-tender. Stir in the remaining 1/4 cup of the Mrs. Dash® Lime Garlic Marinade and tomatoes. Heat through. Spoon 1/2 cup fish mixture onto each tortilla. Fold in half and serve.