Hi everyone, sorry if I posted in the wrong place, but I just had some questions about my flower horn. I got him 4 days ago and he is about 7 inches. First of all, I was wondering if he could have any tank mates in a 75 gallon. He isn't overly aggressive but he is definitely one of the more aggressive fish I have kept. I really like Oscars and grammodes but I don't think either of those would work. Secondly, he kind of twitches his dorsal fins sometimes and I was wondering if there is anything bad about this, other than that though he doesn't show any signs of sickness . It doesn't look like it hurts him but I want to make sure that he is ok. Thanks for any help 
