If the white spots come and go as it touches the sand then it is not likely ich. If the fish is happy and eating and not gotten beaten up by the big one, it might be a good idea to just leave it alone. I was told and I agree that most systems have ich but when the fish are not stressed and healthy, their immune system can fight against ich, so they don't have any problem.
I would observe the fish closely before jumping the gun and scoop them out to the QT tank cause that will stress them which make them vulnerable to diseases ....but that is your call! I hope they are OK
I would observe the fish closely before jumping the gun and scoop them out to the QT tank cause that will stress them which make them vulnerable to diseases ....but that is your call! I hope they are OK



