I have one really aggressive Indo that likes to chase the others around. All the other Indos seem pretty chill. If I removed the aggressive one, do you think that everyone will be peaceful with each other or will another bully arise?
I agree with Ben, it is better to keep him in because he is spreading his aggression over 5 others. If you remove him the new bully will only be spreading his aggression over 4.
I agree with above, I had 6 dats all about 4 inches, each considered itself the boss and aggression was constant. I added one 5 inch IT and a 7 inch IT. Aggression amongst the others stopped straight away. Now the larger Dat controls the tank but no real damage is ever done, now and again the larger IT demonstrates who's boss but it is spread around all the Dats.
If you remove your boss Dat then the next in line will take over.
no way to tell for sure, but since he would have less fish to spread aggression over, their is a better chance it will seriously injure or kill another dat.