I'm new to caring for betta fish, so i dont know much about diseases.
When i was changing the water in my tank, i picked up by betta with a net and i noticed there was little blue specs in the net. I took a look at my betta and i see she is missing a little area of scales at the base of the back fin.
A week later, i see a white, sorta fuzzy patch where the scales used to be.
This isn't the first time she lost scales. Previously i think my fake plant scratched her but she didn't get a white, fuzzy patch.
I'm not sure if it is a disease, i would like to know if i need to treat it and how.