The size of the these will be between 1.5 and 2.25 inches with most being right around 2 inches. Red Melon Yellow Faced Discus will just be starting to put on the orange-red coloration at 2 inches. At the 2 inch size they will be mostly yellow with a hint of red, usually in the fins. They will not have full red coloration until mature at around 5-6 inches. Red Melon Discus are derived from the Pigeon Blood strain. The picture is of a mature adult. Juvenile coloration and pattern will vary. We are always willing to try and sex our fish for a customer, but we do not guarantee it. All Discus are unique and the mature coloration/pattern of each can vary.