I adopted a very small/young female Betta fish a few weeks ago for my workplace. When adopted she had what appeared to be a loose cluster of scales on her side. I figured she had been scratched in transport somehow and didn't pay too much mind to it as it didn't seem to bother her. However it has been growing quite quickly and seems to be a mass coming out from under her scales, not the scales themselves. I'm concerned it's a tumor. (Images below, click to ZOOM)
I've also noticed a smaller white spot forming on the other side of her body, up on her head (Image below). Not sure if these two are related.
I started treating her with MELAFIX four days ago and it seems to have made a slight difference in terms of the shape of the mass on her side, but the one on her head has been getting bigger.
She is in a 5 gallon tank with a filter, an air rock, two apple snails to keep it clean (Zester and Crab), and a heater. Lots of places to hide. A moss ball. I know NOTHING about PH levels and things as I've never had any problems with fish and the general setups I've used.
Her name is Dela(Haze) and we all love her very much here. She is EXTREMELY active still, eats well (in fact she's ALWAYS hungry and has grown quickly) and she is super social. She always comes out to say Hello and ask for food. Nothing in her behavior tells me that she is sick or that these spots are physically harming/hindering her. Does anyone know what kind of fungus this could be, if so? I definitely don't think it looks like Ich/Ick.
Some images taken with flash, which is why she looks green in a few!