PREHEAT oven to 425°F. Moisten fish fillets with water. Shake off excess. Add taco seasoning mix to the coating mix in shaker bag.
SHAKE 1 or 2 fish fillets at a time with coating mixture. Place in 15x10x1-inch baking pan sprayed with cooking spray. Discard any remaining coating mixture.
BAKE 12 to 20 minutes or until fish flakes easily with fork. Serve with salsa.