Thank you! Yes, sometimes that’s all we can do! Was my first fish so I'm alittle bummed.
I'm just seeing this now. Sorry about your fish, but there wasn't anything you could have done for it at that point. The primary issue was that it was very thin. It may not have been getting its fair share of food, or it had some food absorption problem, but that seems to be the root cause. Be sure that the other fish in the tank are not thin and are eating well.
Jay