The fish itself is almost 4" in length. The suction cups are rather large on that heater in my QT.
I also thought maybe the black would come in with maturity, but I don't think this fish will have them honestly given it's size.
I've read online that some "cinnamon" clowns may or may not have black pelvic fins...
I'll be sure to ask where they got them.
Either way, it's my wife's fish and she likes it, just want to make sure she wasn't charged more for a standard tomato. (Plus I prefer the black personally)
Attached is a pic of a juvenile and one more mature. Like I said, I prefer these markings.