Before i go ahead and adress the isue at hand i want to say this. Im kind of attached to my current tank boss because when i first stocked this tank ihad a deadly spike that killed everyone except him so i took him to my LFS so they can hold him until my tank was ready again. When my tank was ready i added him first so he was in the tank for about a few hours before the rest of the stock. Now i have 19 in the tank hes still the boss but he wont leave anyone alone and 90% of the fish are on one side of the tank i dont want to jump to any conclusions because i just added 5 yesterday so he may just be letting the other fish know whos boss. If this continues is it safe to say i will have to get rid of him ? Or is there anything i can do to stop him ? already rearranged the rocks. Thanks.