Hey C_B Why dont you thin out your stock alittle? You have 6 Gouramis' ,maybe take back two or three? I think you should think about what is best for your bichir to, he will be 12" long in a tank he is twice the size of. Think of it like this, you would have to live in a 10'x6'x5' room untill you die. Does that sound fair? Has for the JB Cons if you can get another 29 then keep them, but if not get rid of them before they get to big. Good Luck!