They do not usually keep that coloring either sad to say. I wanted a koi colored
betta so badly and when I got one and paid a fortune for the little guy and he was gorgeous. I brought him home and fed him good quality food and now he is a chocolate through and through. the coloring changes and the patterns will disappear as the gene is recessive and he will become some other coloration when he settles in I am betting. I know the pic is a small one but my koi is in my avatar and he is chocolate brown now from tip to tail. Pretty but not what I bought.