Using a paring knife, score the sides of the fish.
In a small bowl, combine the flour, jerk seasoning, rice flour, and the peri peri seasoning. Season with salt and pepper. Coat the fish from head to tail in the dry rub.
In a deep sauté pan or Dutch oven, heat a ½ inch of cooking oil over moderately high heat until very hot. A deep-fat thermometer should register 350°. Carefully add the fish, letting the tail stick out of the pan if necessary. Let the fish cook, without moving, until crispy and browned, about 9 minutes. Using a large spatula, carefully turn the fish. Continue cooking until crisp and browned and just done, about 7 minutes longer. Transfer to a paper towel–lined plate to drain.
Meanwhile, in a small saucepan, melt the butter. When it begins to sizzle, stir in the garlic and remove from the heat.
Place the fish on a large plate or platter and drizzle with the garlic butter. Serve with Chef Paul’s Tropical Salsa and Chef Paul’s Scampi Sauce.