Anyone seen that before?

[Adam GR]

Have you tested your water?

Yes

If yes, what is your ammonia?

0

If yes, what is your nitrite?

0

If yes, what is your nitrate?

20-60ppm

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?

51-60%

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.

Hi I have problem with this two fishes, I was suspecting limphocystis but it usually goes away after a month and my guys are like this from ages. Ob at least a year. I was already posting this but not much response.
is here any disease expert who could help me?
OB looks really bad but act as normal.