Does this mass appear to be located near the anus of the fish as if the innards were coming out?
Some worms stay in the fish feeding until they get mature then they pop out like a nightmare and start breeding in the water and spewing their spawn all through everything. I think it's anchor worms that do this, but I don't remember for sure. This tends to happen way after the fish got infected and it's horrible. Happened to me a couple times when I had goldfish in the tank that had come from who knows where.Royal_Affair said:I took pictures but they aren't any better. I looked for worms but I don't see anything. It looks like a cyst or a pimple that is going to pop. It has small red dots almost like blood and a white area as well. No other fish has anything like this.