Hello, it has been a very dark week for me. Last week, I discovered camallanus worms hanging out of my fish. The next few days were miserable as I waited for the medication to arrive. I have been treating it with Levamisole, but it just hasn’t worked. I just don’t know what to do, I’ve been treating it for 3 days now. Any suggestions? Also, how long should I wait before I euthanize my fish? I just can’t bear to see him going through this, you can just see the hope and life draining out of his eyes.