dunder-head
Aquarium Advice Regular
We have comet goldfish about 2yrs old, and have noticed one of them has developed 2 small red lumps, one on each side of his body just in front of the tail. In the centre of one is what looks like a small white spike. Any ideas what this is and how to treat it? We have already put some general tonic in the water. I have attached 2 photos but they're not very clear, our fish don't like posing 4 photos!