Generally speaking, the Ocellaris Clownfish (
Amphiprion ocellaris) lacks the more obvious black colouring between the bands on the body, commonly found in
Amphiprion percula. Specifically,
"It has 11 dorsal spines (10 in A.percula), and 17 pectoral rays (16 in A.percula)." - from
http://www.amonline.net.au/fishes/fi...h/apercula.htm
So if you want to know for SURE, get counting.
Actually, here's a good page - scroll down to similar species:
http://www.edge-of-reef.com/pomacent...cellarisen.htm - see if yours matches one of these.