Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper. In a bowl, combine the whitefish with olive oil, ground cumin, cayenne pepper, fine sea salt, and black pepper. Spread on the baking sheet and bake for 20 minutes, finish with a broil for 3-5 minutes until browned and flaky.

While the fish is baking, cook your cilantro lime rice according to package instructions, or combine cooked rice with chopped cilantro, lime juice, and a pinch of salt if making from scratch.

In a small bowl, whisk together sour cream, mayonnaise, lime juice, garlic powder, and Sriracha to create the creamy sauce. Adjust spice level to taste.

Spoon cilantro lime rice into each bowl, arrange baked fish on top, and add toppings: shredded cabbage, diced avocado, tomatoes, red onion, and cilantro. Drizzle with taco sauce and serve with lime wedges.