I can't find a specific place to post this. This isn't the Chinese Algae Eater. I went up to a fish store to get one and I saw several of them in a tank. They was gray/black. With that, I told her to just pick one. Now I come home, took the bag out of the sack only to find a yellow color. I don't know what in the world happened to this fish. Normal? Wrong one? What should I do?