Ah... another clarkii vs sebae discussion, my favorite
.
Well the MAJOR difference, hosting anemones. Clarkii lives in any anemones even condi, but if the condi doesn't like it, then it'll eat it
. Anyway, any anemones you have, clarkii will live in it. I am not suggesting any anemones keeping, ok?!
Let me put it this way, they're the type of thing that you can see but you cannot keep. It belongs to the sea.
Sebae, is somewhat picky. I had one that lived in a bubble tip, other than that, less hardier anemones, such as carpet, saddleback.
The bands are also another difference. Clarkii has three, sebae has two. The middle band of sebae is tilted back a little and extended to the back dorsal fin.
The coloring is different too. IMO, Clarkii tends to be darker. And the anal fins stay yellow. Sebae, everything turns dark brown or black. I am not 100% sure about this difference. It's merely my observation.
The adult size is also different. Clarkii grows big. Its adult size is about 6 inches. Sebae stays a bit smaller. Its adult size is about 4 inches.
If you want more info, here's one website that I use to find info on clownfishes...
Clownfishes and Their Host Anemones
Hope it helps...
stupid_naso