In a medium bowl, combine tomato, onion, jalapeno pepper, cilantro and ½ tablespoon lemon juice. Stir until evenly distributed, season with salt to taste.
For the tacos:
Place fish into a dish or gallon size resealable bag and pour tatemada salsa guajillo over fish, allow to marinate in mixture 20-30 min.
On a mixing bowl, add lime juice, Cabbage. Mix well.
Heat a 12-inch non-stick skillet over medium-high heat, drizzle lightly with vegetable oil. Remove fish from marinade and cook in skillet about 3-4 minutes per side, until cooked through.