| There has been a lot of research into this topic and the consensus seems to be that our tanks are not large enough for fish to school. That being said, there are some fish that will band together in a school like fashion. They may hang out together, but they wont act like a real school.
Blue/Green Chromis may exhibit some school like behavior, but ask any one who has attempted to keep a bunch of them for a while and you will see that its only temporary. They may get along for a while, but they will always slowly reduce themselves in numbers to 1 or 2. I have tried this a couple times with always the same results.
Anthias are one fish that comes to mind. Some varieties of them will stick together in a school like behavior, but they can also be tougher fish to keep. Not necessarily for the beginner.
__________________
I have Attention Defic...HEY LOOK, A FISH! | 
Linear Mode
