Lionhead

Third day into quarantine, i fed the fish a sprinkle of floating food the second day, and seemed like afterward it started floating near the top with the back exposed, I came home today and the back became all red.. the part that is exposed to the air.

It is the usual pallet i feed regularly.

It is otherwise very active.

It is in a 100 liter bucket with a working sponge filter from my main tank. I just did 95% water change this morning since i noticed it started to float near the top.

Parameters all normal.

Had anyone had similar experience and what I can do to fix it? Methylene blue and salt?

Third day into quarantine, i fed the fish a sprinkle of floating food the second day, and seemed like afterward it started floating near the top with the back exposed, I came home today and the back became all red.. the part that is exposed to the air.

It is the usual pallet i feed regularly.

It is otherwise very active.

It is in a 100 liter bucket with a working sponge filter from my main tank. I just did 95% water change this morning since i noticed it started to float near the top.

Parameters all normal.

Had anyone had similar experience and what I can do to fix it? Methylene blue and salt?