So, I got some new fish... I bought 3 beautiful red platys, and the guy trying to catch them what he said was a danio in with them. I had a lot of room in my aquarium, so I decided to get 4 danios too (they're small).... well it turns out the first one wasn't a danio. It was a white cloud. I knew it looked different, but I thought maybe it was the difference between males and females or something. I wasn't too familiar with danios, I just knew that they would be fine in my tank. I had read about them, just didn't know enough about what they look like. So, the 3 danios (they're pearl danios) hang out together and seem fine, but of course the white cloud just kind of hangs out by himself. I feel kind of bad... I can't take him back to the fish store (it's like 45 minutes away), and I don't have any room for more fish. Is this fish going to be completely unahappy? It's either a 30 or 36 gallon tank, so he's got plenty of room, but I know they're schooling fish...