Prepare the Salsa: In a medium bowl, combine the diced mango, minced red onion, fresh cilantro, minced jalapeño, and lime juice. Toss well to distribute ingredients evenly, then set aside at room temperature.
Mix the Yogurt Sauce: In a small bowl, whisk together the plain Greek yogurt, 1 tablespoon of lime juice, and 1/4 tsp of garlic powder until smooth. Set aside in the refrigerator.
Season the Fish: Pat the fish strips completely dry with paper towels. In a large bowl, toss the fish strips gently with 1 tablespoon of olive oil, smoked paprika, garlic powder, cumin, salt, and black pepper.
Coat the Fish: Place the panko breadcrumbs in a shallow bowl. Press each seasoned strip of fish firmly into the panko, coating all sides evenly.
Cook the Fish: Heat the remaining 1 tablespoon of olive oil in a large non-stick skillet over medium-high heat. Add the fish strips in a single layer (do not overcrowd the pan). Cook for 3 to 4 minutes on the first side until golden brown, then flip carefully and cook for another 3 minutes until flaky and cooked through.
Warm the Tortillas: Heat a dry skillet over medium-high heat and warm each corn tortilla for roughly 30 seconds per side until soft and pliable.
Assemble and Serve: Build each taco by laying down a base of shredded cabbage on a warm tortilla. Top with two strips of crispy fish, a generous spoonful of mango salsa, a few slices of avocado, and a drizzle of the Greek yogurt sauce. Serve immediately with extra lime wedges!