Welcome to OFL
If you look on your keyboard, just to the left is a button with "CapsLock" written on it, can you please press it
writing messages in capital letters is tantamount to shouting and is not easy to read.
Firstly we will require your water parameters. This being ammonia, nitrates, nitrates and PH
It would also be helpful to know what size your tank is and what kind of filtration you are using.
Is it possible to you to also post a photograph?
This could be either a bacteria or parasitic infection, obviously it's very difficult for me to say exactly what it could be. For reliable diagnosis, you would have to take a smear and have it tested. In the meantime, you could try a parasitic/bacterial medication and see if that works
Remember that for medication to work successfully, your water conditions must be right. If you have poor water conditions than medication doesn't normally work very well
