To prepare sauce, combine all ingredients in a small bowl and mix well and season with salt and pepper to taste. Keep in refrigerator can be made a day ahead.
To prepare fish, heat gas grill or nonstick grill pan to medium-high heat. Combine paprika and all other spice ingredients (through cayenne pepper); sprinkle over both sides of fish. Lightly coat both sides of fish with olive oil spray; Place fish on hot grill or grill pan and Cook about 4 minutes on each side or until fish flakes or until desired degree of doneness. Serve with the sauce. Garnish with mint sprigs.