Blue dragon fader bleaching

[Zeusfish]

Have you tested your water?

Yes

If yes, what is your ammonia?

O

If yes, what is your nitrite?

O

If yes, what is your nitrate?

.1

If I did not test my water...

1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

What percentage of water do you change?

21-30%

How frequently do you change your water?

Every week

If I do not change my water...

1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

My daughters blue dragon fader basically looks like he is bleaching out. Ammonia is 0. Ph is 7. He gets feed protein pellets and hikari fish sticks. He’s been given salt baths. He’s been given a Trisulphur treatment. Has a massive canister filter. He eats, he’s active, he interacts. Has normal coloured poo. This has been happening for over 2 months.I’m running out of ideas. Maybe stress? Need advice please
First photo is from April 1st. Second photo is from May 14th

 

[phreeflow]

That’s what fader flowerhorns are supposed to do. Their original color “peels” and they turn a different color. Hopefully, it’ll fade completely and be a solid color without the black patches

 

[Zeusfish]

That’s what fader flowerhorns are supposed to do. Their original color “peels” and they turn a different color. Hopefully, it’ll fade completely and be a solid color without the black patches

Thank you. I feel a bit silly now because it is in his name, but didn’t realise it was a literal thing. The upside is I can stop stressing about him. ??