Eh.. I would be a hypocrite if I told you that was unethical to sell of animals as you breed for higher morphs. I just recently sold off my normal male and a female to make room for the morphs I am getting into more. I see nothing wrong with buying and selling them as you see fit, as long as they are going to good homes. Some animals you will develop a special attachment to and regardless of their breeding role, you can't sell them