These do have some orange coloration on the head as juveniles. It will slowly increase in brightness and intensity as they mature. Some will also have orange on their bodies. All Koi Angelfish have some random black coloration and the amount-coverage of the black coloration will vary significantly. We are always willing to try and sex our fish for a customer, but we do not guarantee it. All Angelfish are unique and the coloration/pattern of each can vary. Medium Angelfish have a body size, without the fins, of around the size of a nickel to a quarter.