Phylogeny
The species Amphiprion ocellaris belongs to the class Osteichthyes which contains bony fish and ray-finned fish. A. ocellaris is the most basal species in the genus Amphiprion which is closely related to the genera Premnas. The species' most closely related ancestor is Amphiprion percula, the Orange Clownfish. It is thought that A. ocellaris specialized after diverging from the Premnas genus, and scientific evidence confirms that all clownfish belonging to the genus Amphiprion could withstand the stings of only one type of anemone, after further diverging the 28 different species of clownfish including A. ocellaris specialized to be able to resist the poisonous stings of many different species.
Read more about this topic: Ocellaris Clownfish