i put a jardini in with my oscars and he tried it on my oscars the albino is the tough one he smashed the jardini but in the end all my peacock bass would hide up the corner of the tank the jardini would try it on my red snakehead so he would have to headbutt him out of the way and he would try it on the albino when he had his back turned in the end i had to get rid of him, i wouldnt have another 1 again they are just too nasty you should of saw him take out a red comet at dinner time, iv had 3 datnoids and yeah i can say they are slow growing i know a man who had a 1 inch and its now 7 years old and is 14 inches so you can see there its only done 2 inch per year which sounds about right, what are RTG like in terms of aggression? they nasty at all or is it just jardini thats super nasty?