Preheat oven to 350°.
To prepare sauce, combine first 6 ingredients in a food processor; process until garlic is finely chopped. Add parsley leaves, cilantro, capers, rind, and juice; pulse until herbs are coarsely chopped.
To prepare fish, sprinkle fish with 1/4 teaspoon salt and 1/4 teaspoon pepper. Place fish on a foil-lined baking sheet coated with cooking spray.
Bake at 350° for 15 minutes or until fish flakes easily when tested with a fork. Serve fish with sauce. Garnish with parsley sprigs, if desired.