Fish Behavior

[little jewel]

My (African Bumblebee) cichild is swimming vertically, and it has white stuff on its mouth. Has anyone gone through the same?
What should I do?
Is it a disease?

 

[fluttermoth]

Most 'diseases' are caused by poor water quality.

How big is your tank, how long has it been set up, is it cycled?

Have you had the water tested, and if so, what were the results?

How, and how often do you clean your filter, and how big and how often are your water changes?