Add fish to glass bowl or container. Add Ceviche, making sure fish is completely submerged in liquid; cover and transfer to refrigerator. Marinate at least 2 hours, or up to 4 hour. Drain fish, discarding marinade.
Meanwhile, in medium bowl, stir together cabbage, red onion, ¼ cup cilantro, 1½ tbsp. lime juice, vegetable oil and ½ tsp. Adobo until well combined; cover and refrigerate until ready to use.
In small bowl, stir together sour cream, mayonnaise, remaining lime juice, remaining cilantro and ¼ tsp. Adobo until well combined; cover and refrigerate until ready to use.
Heat grill to medium-high heat. Using paper towels, pat fish dry; season with Adobo. Add fish to hot, greased grill grates. Grill, flipping once, until charred and opaque through center, about 6-8 minutes; transfer to cutting board and coarsely chop. Add tortillas to grill; grill, flipping once, until warmed through and slightly charred, about 30 seconds each.
To assemble tacos, add some fish to tortilla; top with cabbage slaw and drizzle with sour cream-lime sauce; serve.
If you don’t have an outdoor grill, or of the weather doesn’t tempt you to cook outdoors, you can still easily cook the fish for these Grilled Fish Tacos! Simply grease an indoor grill pan or a non-stick skillet with vegetable oil, add the fish and cook flipping once, until light golden brown and cooked through, about 8 minutes. Then continue the recipe as instructed.