This is a test setup using my old ten gallon ten. It is intended to see what happens if not only is there more than two clownfish (i.e. not recommended), but a mix too (again, not currently recommended), of juvenile clownfish growing up together.
Amphiprion melanopus (cinnamon clownfish), x1, named Cinnabon
Amphiprion frenatus (tomato clownfish), x1, named Orange
Amphiprion clarkii (clarkii clownfish), x1, named Yellow
Amphiprion ocellaris (ocellaris clownfish), x1, named Nemo #1, Nemo #2, and Nemo #3