i have a 28 gal and i do not plan on having more than 3 fish. picasso pair, and my spot tail goby/pistol shrimp..you should be fine with 2 fish..have you ever thought of having an angler? they are pretty neat but in that 10 gal he would have to be by himself.. you're basically at either a rare clown, nice helfrichi firefish, or you can MAYBE JUST MAYBE get away with a pair of purple firefish + your goby shrimp combo, you are going to have to get some more opinions on that issue..