I have a Royal Gramma that I bought 3 weeks ago and its belly is now white and it has a patch on one side that was white but has now darkened.. It also has been rubbing that side around the aquarium a bit. It has been eating fine although it doesn't like flake and seems active enough.
It's in the QT
tank with no ammonia or nitrite present.
I stepped up the water changes and that seemed to help a bit as the now brown patch used to protrude a bit.
I'm wondering how I should go about treating this.
Thanks for any help.