Heat a nonstick skillet over medium-high heat until hot. Add peppercorns and cloves, and cook 1 minute. Place spice mixture in a spice or coffee grinder; process until finely ground. Place pepper mixture in a saucepan. Add rum and next 4 ingredients (rum through lemon juice); bring to a boil. Reduce heat; simmer, uncovered, 25 minutes or until reduced to 1/2 cup. Strain pepper "paint" through a fine sieve over a bowl; discard solids. Set aside.
Preheat oven to 450°.
Wrap handle of skillet with foil; heat oil in pan until hot. Brush pepper paint over one side of fish. Place fish, paint side down, in skillet; sauté 3 minutes or until dark brown. Turn fish over; place skillet in oven.
Bake 7 minutes or until fish flakes easily when tested with a fork. Serve fillets with Habanero- Mango Mojo and Black Bean-and-Fruit Salsa; garnish fillets with lime wedges, if desired.
Note: Pepper paint may be refrigerated for up to a month.