hi all, i have got some cockatoos a few days ago and was wondering how many is okay to fit in my tank.. i have 1 male, 3 females in there right now.. they are small right now and a little bit of aggresion sometimes between the females. also have a pack of zebra danios and tiger barbs. do i have space to put in some more and can i do it without making the fish more aggresive? tank is a 46 gallon bow front