I just noticed what I think may be fungus on my betta's head. Here's a pic. I have all kinds of meds on hand, and salt, but I wouldn't mind a little advice.
Oh, btw, he lives in a 3 gallon, planted plastic tank. There's no filtration but I do a water change every 2 days and the perams are all good. (I can test later to make sure, I just want to get a diagnosis on his face asap). He's been living in there for a year with no problems. There has been a bit of a brown algae bloom lately, but I didn't think that was an issue.
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Hopefully you can see, there's whitish discoloration around his mouth and on his gill flap. It doesn't really look fluffy, but whatever it is has appeared in the past two days.