Last week I was really freaked out because one of my fish had been sick with SBD for quite a while. I had assumed that it was due to constipation, but he wasn't responding to ES treatment. I had just come to the conclusion that it was probably parasites or bacteria when he started getting better. I am very happy to say he seems to have made a full recovery and has been back to normal for close to a week now.
I've switched to a different kind of food that comes in smaller pellets, so I'm hoping that'll keep this from happening again. I also bought him a leaf hammock as a reward for being so brave, and he loves it!