In a bowl, mix olive oil, lime juice, garlic powder, cumin, paprika, salt, and black pepper. Add the fish fillets and coat well. Let marinate for at least 15 minutes.

Grill the Fish

Preheat a grill or grill pan over medium-high heat. Grill the marinated fish fillets for about 3-4 minutes on each side or until cooked through and flaky. Remove from heat and let cool slightly before chopping into bite-sized pieces.

Slaw Preparation

Prepare the Slaw

In a mixing bowl, combine shredded cabbage, shredded carrot, chopped cilantro, lime juice, and salt. Toss to mix thoroughly and set aside to let the flavors meld.

Spicy Sauce Preparation

Make the Spicy Sauce

In a small bowl, mix together Greek yogurt or sour cream, Sriracha sauce, lime juice, and minced garlic. Stir until well combined and set aside.

Assembling Tacos

Warm the Tortillas

Heat the corn tortillas on a dry skillet for about 30 seconds on each side, or until warm and pliable.

Assemble the Tacos

Place a portion of the grilled fish on each tortilla, top with slaw and drizzle with spicy sauce. Serve with lime wedges on the side.