No tigers, no cories. Cories will be too active, and albinos get 3" long. The ADFs require to be hand fed in most cases, and I find them to be the most stupid creatures I've ever seen. They'll drown while at the surface off the water and, bassically, starve standing on a mountain of food.
Really, the only thing you can put in there are albino paradise fish (gouramis). You can't put albino bristlenose, tigers, cories, RTS, kribs, etc etc in there, and I don't know of many other albinos besides oscars. In shortened terms, I don't know how someone can have an albino 15g. If someone knows of small, compatible fish that could be put in there, please speak up and correct me.
Oh, I almost forgot albino guppies (although they don't look albino to me...)