Grilled Catfish Tacos

Name: Grilled Catfish Tacos
Ingredients: 1 pound catfish fillets; 1 tablespoon lime juice; 0.5 teaspoon salt; 0.5 teaspoon ground black pepper; 0.25 teaspoon garlic powder; 0.25 teaspoon paprika; 0.25 teaspoon ground cumin; 0.25 teaspoon ground coriander; cooking spray; 0.25 cup sour cream; 1 tablespoon chopped fresh cilantro; 1 tablespoon chipotle peppers in adobo sauce; 1 cup shredded red cabbage; 0.5 medium red onion, thinly sliced; 0.25 cup chopped fresh cilantro; 1.5 tablespoons lime juice; 1 tablespoon olive oil; salt and ground black pepper to taste; 1 (12 ounce) package corn tortillas; 0.5 cup shredded Monterey Jack cheese, or to taste; 1 medium tomato, chopped, or to taste; 1 avocado, diced, or to taste; 2 tablespoons chopped green onions, or to taste