Citrus Mahi Mahi Tacos

Name: Citrus Mahi Mahi Tacos
Ingredients: 1 1/2 pounds skinless mahi mahi fillets, cut into 3-inch pieces; Kosher salt; 2 tablespoons achiote or annatto paste (or 1 tablespoon chili powder); Juice of 1 lime; 2 oranges (1 juiced; 1 halved and sliced); 1 teaspoon dried oregano; 1/2 teaspoon ground cumin; 3 scallions, roughly chopped; 2 tablespoons ancho chile powder; 2 teaspoons apple cider vinegar; 1 teaspoon packed brown sugar; 8 sprigs thyme; 6 bay leaves; Corn tortillas, warmed, and assorted toppings, for serving