In a small bowl, combine the paprika, cayenne pepper, garlic powder, onion powder, dried oregano, salt, and black pepper to create a spice blend.
Pat the fish fillets dry with paper towels and rub the spice blend on both sides of each fillet.
Heat olive oil in a large skillet over medium-high heat. Cook the seasoned fish fillets for 3-4 minutes on each side until blackened and flaky. Remove from skillet and let rest.
In a mixing bowl, combine shredded red cabbage, diced mango, sliced red bell pepper, and chopped cilantro. Drizzle with lime juice and season with salt and pepper. Toss gently.
Warm the corn tortillas in a separate skillet for about 30 seconds on each side until soft and pliable.
Flake the blackened fish into bite-sized pieces and place on the warmed tortillas. Top with the mango slaw.
Optional: Squeeze additional lime juice over the tacos before serving.
Notes
Serve the tacos on a colorful platter, garnished with lime wedges and additional cilantro.