There are 3 colouring phases in the red aro life. The first phase is from the fish 6 month years old to 2.5 years. In this phase you could see the red area and colour growing which is most important period for keep the fish into a fish tank. 70% - 80% colour will develop in this phases if you put a fish in a fish tank. The second phase is from 3 years to 5 years old, we call the phase is “Adult phase colouring”. The fish will get more deep red colour for attract the male/female fish for have the baby fish in wild, however, that is not going to be very apparent thing if you keep it into your fish tank. The final colouring phase is from about 6 year. In this phase is almost every fish will lose the thin red colour and become thick and deep red shape but we could control that if you want this happen later. After this period, all the red aro will drop eye.
Henward, firstly, in your fish tank, I can see there is strong wave in your tank and I can hear very noise water sound. That is no good for red aro. Red aro is different with gold one. Red aro likes quite and peace place. You can not find any breeder in Indonesia even put a small water head in the tank because the water wave could increase the metabolism of the fish. We want the 60% of food go to the scale colour and 40% of food to go the fish body. We want the food stay in scale to colouring up and not JUST growing and growing to huge/ monster fish (like your RTG) and just keep pink red colour. Shrimp with shell could give more red colour to the fish, especially the shell! Yes, shape is important but colour is more important for a red aro! Otherwise there is no different between the No.2 and VIP red…
Secondly, the light. Darkness environment is necessary for red aro. Your tank is too bright. Yes, you said you will put water light after one year then you will lose the phase 1 colouring which is most important period for red aro in a fish tank.
Also the too many fishes in your tank. “Never mix fish for a good aro because it’s dragon” I still remember Mr. Xie said that to me when I visit him in Indonesia. He is F4 red aro creator...
Also there are more and more about your tank. Too many details… Mate, I only just give you my suggestion from my experience. I saw my client to keep a good fish and I also saw a sad story in the past. Please do not get me wrong and that is ok if you don’t want take my suggestion.
BTW, can you public the email I sent to you, I mean the photo of Sean’s fish. He just take that photo after 8 month since he got that vip---- no mix fish, darknees light, two water lights, one top lights(red), water water, very very quiet tank, no water head. PH6.3, exactly he did as I told him. You could see the deep deep red colour… don’t you want the same thing happen to your fish after 8 month?