How big is the tank? I had to put Sharky my white/blue in my 40 gal while I plant his tank. He is with 10 cardinals, 10 t bone raspora, 2 molly and 3 corys. He is doing fine just pouting on the back wall. I am net training him for dinner time. This has been the 8 day that I have done this and when he sees the net coming he holds still so I can get him. I feed him in the net and leave him there for about 10 min. while he plays with his food and no one can steal from him.