So, i’m honestly not sure if there is something wrong with my betta or not. He has this red patch on his fin. When I got him, he was all white. That was maybe two months ago. He has since slowly changed colors, transitioning to dark blue with a black face. But he has a red patch on his fin. It isn’t raised or bumpy. It really looks like it is scale color. It looks so out of place though. Is this some sort of disease, or am I overreacting?