Spicy Braised Halibut and Potatoes

Name: Spicy Braised Halibut and Potatoes
Ingredients: 12 ounces small Yukon Gold potatoes , unpeeled, sliced ¼ inch thick; 1 1/4 teaspoons table salt , divided; 1 teaspoon pepper , divided; 1/4 cup water; 3 tablespoons Frank's RedHot Original Cayenne Pepper Sauce; 3 tablespoons unsalted butter , melted, plus 3 tablespoons unsalted butter, divided; 1/2 slice hearty white sandwich bread , torn into small pieces; 5 garlic cloves , sliced thin, divided; 1 tablespoon paprika; 1 3/4 pounds skinless halibut fillets , cut into ¾-inch pieces; 1 cup dry white wine