Stir together cornmeal mix, flour, green onions, bell pepper, sugar, and salt in a large bowl. Stir in crabmeat, egg, and beer until just moistened. Let stand 10 minutes. Pour oil to depth of 2 inches into a Dutch oven; heat to 360°. Drop batter by tablespoonfuls into hot oil, and fry, in batches, 2 to 3 minutes or until golden brown, turning once. Serve with your favorite rémoulade or cocktail sauce.