Many-Spotted Sweetlips (Plectorhinchus chaetodonoides)
Observed: Koh Chang Reefs,
Observed By: Hanah Weerkamp
The many-spotted sweetlips is also known as the harlequin sweetlips. It is a medium sized reef fish that can grow to 72cm in length and up to 7kg in weight. The adults have a distinctive black spots on a white background pattern but the juvenile form is quite different with an orange and white coloration that is similar to clownfishes. The one pictured is a semi-adult with yet another colour scheme. Confused? I am.
Many-Spotted Sweetlips Wikipedia