My son's betta, Bruce has had a lump on his gill cover for quite some time. I tried treating it with epsom salt quite a while back, but it did nothing. I have pretty much assumed that it is a tumor, and there is nothing I can do for him. However, it has basically taken over that whole side of his head, and now he has started a new lump on the top of his head. Is there anything I can do for the poor guy? He has to be absolutely miserable. The scales on the large lump have basically merged into one solid mass on that side of his face, and it's huge. I wish I could post a pic for you, but I don't have a functional camera.
He is in a 3 gal, heated tank - about 76 usually since the basement is pretty cool. His tank is cleaned once a week. Being my son's fish, it's a little harder for me to stay on top of his cleanings, but I try.
Please let me know if there is anything I can do. Thanks.