01 - Combine green cabbage, red cabbage, carrot, and cilantro in a large bowl. Whisk lime juice, mayonnaise, salt, and pepper in a small bowl. Pour dressing over vegetables, toss thoroughly, and set aside to marinate.
02 - Combine paprika, garlic powder, onion powder, thyme, oregano, cayenne, black pepper, and salt in a small bowl. Blend thoroughly to ensure even distribution of spices.
03 - Pat fish fillets completely dry with paper towels. Brush both sides with olive oil, then press evenly into the blackening spice mixture to coat thoroughly.
04 - Heat a cast-iron skillet over medium-high heat until smoking hot. Add seasoned fish and cook for 2-3 minutes per side until deeply charred and fish flakes easily with a fork. Rest for 1 minute, then cut into bite-sized pieces.
05 - Whisk sour cream, mayonnaise, lime juice, hot sauce, and salt until completely smooth and creamy. Adjust seasoning to taste.
06 - Warm tortillas and place fish pieces inside. Top generously with slaw, drizzle with crema, and garnish with additional cilantro. Serve immediately with lime wedges.