I've got a wc Oscar who is ~4.5" maybe more and I just moved it in with a group of geo tapajos and uaru amph Who are all pretty much maxed out for size so I'm not too concerned at the moment but can I expect that as he gets older and larger it will become more aggressive? I've never kept astronotus before but you always hear about each fish having its own temperament, and it's pretty chill for now, kinda hoping he stays that way.