I have been keeping my Plakat male in with my one and only female for quite a while now and they haven't had any problems, they have divided the tank between them (left/right) and the male gave the female the more planted half (which i thought was rather sweet TBH)... But is this actually a good idea? i heard somewhere that is really isnt a good idea to put a male in with a female long term... but they seem alright to me... they even meet in the middle sometimes and say hi, but there has never been ANY hostility...