After doing research about "Dory" I planned on a yellowtail damsel and told my LFS about it. He actually said it was ok to get Dory as long as they are small. They would be ok in a small tank for 2-3 years and in that time if I haven't gotten a bigger tank by then, he would accept a trade in. He also said that damsels lose their color and cause nothing but trouble in his customers tank.