^^^^ I can't believe yours plays well with others, Ever since I got him, he has been a killer. My mistake was buying him and a male grammode and having them divided in the tank. I think the constant displaying made him a much more aggressive fish. IMO if you want to acclimate fish to each other it is best to just throw them in together with no dividers and let them settle out the pecking order. But who knows for sure, they are all so different. I have been trying to find him a female for almost 6months now, It has been really hard. I need to try the lighter substrate, its just not being lazy and actually removing the sand that is in there now.