We aren't very sure if it's fungus, general scale discolouration or he scraped his head in something on our betta.
We left for 2 nights and came back to find it on his head.
Water parameters were fine, temperature 26 degrees celcius us and was fed while we were away and a water change...
I am kind of a newbie in this world. I have had my Betta for around two months and there is a white thing that has been growing for like a month already in his ventral fin.
Do you think this might be an anchor worm or some other parasite?
He is right now on a 5 gallon, heated and...