2 of my fish get these lumps on their sides. They slowly grow over a week or 2. Then they sort of pop and then it heals in a few days. They look kinda like pimples. My greenie had one on his side for the last week or so with no symptoms other than the lump but today when I checked on him I noticed this new red lump. None of the other fish show anything like them and they’ve all been together for nearly a year. I am slightly worried about the redness in the lump, it’s not like the other previous lumps. If anyone has any ideas as to what is causing this I’d really like to know so I can try to stop it from happening.
