to actually get a 100 percent idea of how its gonna turn out. i think about 4-5" is a great size. by then it would have develop the color and the kok on the head. its a really nice fish. just give it a bit grow it out alittle more. once you see a bump on the head the try to use fh food that will boost the size and coloration. like people said its too small right now to tell but who knows yours can be the most gorgeous fh. heck mine looked like crap and showed no potential until almost 6 inches. and turned out best fh ive had in my 10 yrs of hobby. thats the fun part of raising fh is to see how it will turn out.