i recently ordered a 540gal tank for all my cichlids. when it gets here i will have a free 220. what i plan on doing is getting an aro (i have always wanted one). Can i put a few p bass in with my aro or are pbass to aggressive? they seen like cool fish i like them but have never owned one. if they so much as nip a fin on my aro they will be swimming the sewers. what do you think?