Hi, I have 3 goldfishes in a 55 gallon tank (1 oranda, 1 black moor, 1 fantail). 3 days ago after work, I noticed my oranda has a little lump on his face, it was also a little cottony looking, more like fuzzy than really like cotton. I assumed it was fungus disease. That night when I realized he had something, I wasn't able to go to any pet stores to purchase treatment so the next day, I check up on him and his lump got bigger and have little black dots or smudges on top of the very same lump. It still had white fuzzy stuff on it too but became less fuzzy. It got me weirded out because based on what I looked up and google image, it didn't really look like fungus disease anymore. I mean...the fuzziness became less but the lump got bigger, and on top of that, black dots on the lump? So I took a picture of him and took him to my local fish store. I showed them the picture but she was saying that it most likely could be fungus disease. I asked her about the lump and she said one of their goldfishes had a lump on its side and it got cured using: Seachem Paraguard. She didn't know anything about the black dots being on top of the lump but I purchased the Paraguard because I've heard great things about it. "Eradicates ectoparasites and fungal, bacterial, and viral lesions" If my oranda goldfish's illness falls under any of those (because it's a mystery right now), I'm hoping it'll go well. I only did 1 day dosage right now, the 2nd dosage will happen again tonight after work. But I'm still looking around for more answers to what it could be. I came across this disease: Lymphocystis. It looks the most similar. If it is lymphocystis, I read that there is no treatment for it and to get rid of it, I gotta increase the goldfish's immunity and keep him stress free. And it's a long term process for him to get better. I can deal with that, if it IS lymphocystis. My water parameters: PH: 8.2 Ammonia: 0 Nitrite: 0 Nitrate: 80 My filter: Marineland canister filter c360 (and yes I took out carbon for the medication) My oranda is swimming well, no bottom sitting or gasping at the top. The only abnormal behavior is that he gets a little excited about the food and when the pellets do fall to the floor, it's like he can't see them and just zones out. By the time the other goldfishes ate pretty much all of it, he starts grazing. The lump is not obstructing his view... the only thing that's actually covering his sight is his own head...because he's an oranda and their face skin does somewhat cover his eyes as he's growing. Has anyone been in this situation? What do you think it is? And if it is lymphocystis, any advice to help him get better? What I fear is...that it's a tumor. I really hope it isn't but I'm going to continue the treatment with Seachem Paraguard and see what happens. I have a picture of him.