Add all crema ingredients to blender and blend until smooth. Set aside until ready to use, or refrigerate for up to two days.
Preheat grill to 350°F.
Oil grill to prevent fish from sticking
Mix fish seasoning ingredients together in a small bowl.
Liberally coat all sides of the fish fillets with the seasoning.
Place fish on oiled grill and cook on both sides for 4-5 minutes per side, using a spatula to gently turn the fish.
Squeeze fresh lime juice over fish after flipping over.
Remove cooked fish to a warm pan over indirect heat
Heat tortillas on grill.
Top each tortilla with grilled fish, cabbage and crema. Serve