UPDATE: *****
I couldn't find any information on this regarding my particular case and how long the fish had been refusing food for, so I wanted to share (anecdotally at least) in case anyone else had a similar issue.
Forcing food with meds seemed to be the turning point for me. But not the end all be all.
After forcing some food with meds, the fish still didn't eat for a few more weeks. However, he was showing signs of being interested, which hadn't happened in a while.
I re introduced live food again since the fish was already wasting away and he started eating immediately. I kept this going for about a week so I could get him recovered enough and then started the process of offering the same live food he wanted but this time, not alive.
THIS is where the real challenge began.
The fish refused to eat again, even though it was literally the same food. It seems that I had a combination of parasites mixed in with the GT only being stimulated by the hunting aspect of eating.
I ended up having to transition the fish from live fish to live worms. Then I graduated him to half dead worms (freshly cut) until he got used to eating them completely dead.
After that, I had to condition him to getting used to having pellets floating around while eating the worms - essentially just getting used to the smell during feeding time ( he completely ignored those for a while). About a month later, I stopped offering worms and would only drop pellets.
It took about 2 more months after this before he started eating pellets again.
Now he's back to normal and eating pellets with gusto!
So long story short, while these guys seem to be prone to parasites, they are also very stubborn and can/will go on for several months (6+) without eating to prove a point. Even if they die in the process.
If you've done everything on the medication side of things, you better buckle up and start a good ol conditioning experiment. It might be the thing that actually makes a difference.
