Its not Black & White :D
Juvenile Pinnate Batfish - Platax pinnatus, still almost all black in colour with borders of orange. This is supposedly a mimicry of 'Flatworms' which are poisonous, thus a way for their protection when small in size. As they get's bigger, they will takes in more silverfish colour, the fins becoming shorter and the orange border will fades eventually.
''Platax pinnatus'', also known as the pinnate batfish, dusky batfish, shaded batfish, or red-faced batfish is a fish from the western Pacific that occasionally is kept in marine aquariums.