To prepare crema, combine the first 8 ingredients in a small bowl; set aside
To prepare tacos, combine cumin and next 5 ingredients (through garlic powder) in a small bowl.
Sprinkle spice mixture evenly over both sides of fish
Place fish on a baking sheet coated with cooking spray and ake at 425° for 9 minutes or until fish flakes easily when tested with a fork or until desired degree of doneness.
Place fish in a bowl; break into pieces with a fork
Heat tortillas according to package directions and divide fish evenly among tortillas
Top each with 1/4 cup cabbage and 1 tablespoon crema.