Cajun Catfish Tacos

Name: Cajun-Catfish Tacos
Ingredients: 2 cups shredded green cabbage; Kosher salt and freshly ground pepper; 1 cup plain yogurt; 1 teaspoon finely grated lime zest plus 1 tablespoon fresh squeezed lime juice; Pinch cayenne pepper; 1 teaspoon garlic powder; 1 teaspoon dried oregano; 1 teaspoon sweet paprika; 1 teaspoon dried thyme; 3/4 teaspoon cayenne pepper; 1/2 teaspoon dry mustard; 1/2 teaspoon onion powder; Kosher salt and freshly ground black pepper; Four 8-ounce catfish fillets; Olive oil, for brushing; 8 corn tortillas; 8 sprigs cilantro; [For Serving:] Lime wedges and your favorite hot sauce (optional)