Preheat oven to 200 degrees C. Lightly grease a baking dish.
Mix the bread cubes, parsley, seafood seasoning, mustard, pepper, lemon juice, pepper sauce, butter and mayonnaise together in a mixing bowl. Gently stir in the crabmeat until well blended being careful not to break the crab chunks.
Place the fish fillets on a clean surface and spoon 1/4 of the crab mixture onto one side. Starting on the side with the crab mixture roll up the fillet around the crab filling. Place the rolled fish into the prepared dish open side down.
Bake in preheated oven until light brown, bubbly and fish flakes with a fork; about 15 minutes.