Well, they are definatly not tomato clowns, lol, nope. I would have to say that those are false percula's (Ocellaris Clown). The main difference between the two (false vs. true Percula), is that they have thinner black borders, than the true Percula, and they (false) have 10 rather than 11 dorsal spines, and a higher anterior dorsal. They are pretty hardy little guys, and really easy to keep, I have about 5 right now, they aren't too picky when it's dinner time, and if you have a Ritteri, or carpet anemone, they will love you. LOL. The only problem with them is that they can be extremly belligerant towards others of their kind, so I suggest keeping them in groups around 3-7, that way a pecking order is defined, and no one fish is picked on too much. They are cute though, and yes, the bigger one will be (IF isn't already), the female. Good luck.
--EMI
--EMI