These will be between 1.5 and 2.25 inches with most of them being 2 inches. These are a beautiful brilliant red and turquoise as juveniles and already have much of their coloration by two inches. As they mature the red and blue will become more contrasted and shimmering ending in a beautiful intense, almost flourescent red with a distinct turquiose pattern when they are fully mature. The amount and type of pattern on them can vary significantely. 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 coloration/pattern of each can vary.The Discus you are purchasing is a juvenile. Discus will not show their full pattern and final coloration as in the picture until fully mature at around 5-6 inches.