Hi, I just got Fuego (a gorgeous red betta) a couple days ago. Early this morning I noticed he had a couple white, sorta cottony patches on his side which I researched and found is a sign of a fungal infection. Since he's new, I'm not sure how lazy he typically is, but he does seem to be...
My son noticed a spot forming on our Betta (Neptune is his name). Neptune has been active, healthy, gets regular water changes and lives in an unfiltered unheated tank. No issues for 10 months until now.
Just wondering if anyone knows what to do or if this is going to get better.