HI right now I have a 1.5 inch GT hoping its a male. It has longer fins. BUt i know its kinda early. Later on once it gets better i will get a bigger tank for it. but what are best fish to keep with it. Right now i have 1 silver shark and a crayfish. I want the GT to become dominate and develope a hump I heard if I keep fish that it can take charge over it would help.