One fish not eating trying a treatment regimen

[Hobbiest]

I have one fish that only takes food in and then spits it out. She has been put into her own tank for treatment. I have had her since last fall. Her stomach is shrunken, or concave or indented. She is not holding. I have been trying this treatment in the video but so far she hasn't started eating yet. The video claims 2-4 days but it has been 5. Some 411 would be useful. Around the 28:00 mark on the video he starts dealing with my issue. I am using this medication and method in the video.
https://youtu.be/vBe4_bhKYKo

[Steve]

Watched some of the vid, hard to get all the info from that though. So sounds like your fish has some internal issues? API Gen cure (in the vid) has some metro in it, but if memory serves correct I don't think it's a whole lot of a dose in that. IMO I would isolate your fish and get some pure metro and hit it with a strong dose of metro. as well as feed it some metro soaked food. That will give it a better dose of metro than the Gen cure does.

At least that's my .02 until someone with better info chimes in.

[Regalblue]

I didn't click the video, since I'm not on wifi at the moment.
 
Usually if I have a fish with sunken belly/internal parasites,  I just use Epsom salt.   You can google for the correct dosage.

[waterkeeper]

Hi. I'm also having this same issue with one fish not eating. I just noticed it couple days ago so I've been keeping a close eye on him when i would feed and looking out for stringy white pooh. I have Malawi peacock/haps 75g. It has been confirmed he's not eating and i noticed stringy feces. Immediately I stopped feeding, tested water with api master test kit. 0-0-10-8.0ph-78F. Water parameters good. Right now I'm preparing treatment epsom@2tbs/10gal.... i have metro on hand- question is should i use the metro with the epsom ?  And just recently i moved 3 syno-petricolas from the 75g to a 45gal 2 days before i noticed the one not eating. Should i treat that tank too with any meds or epsom as a precaution ? In the 45g i have about 10 juvies and the 3 syno cats.

[Hobbiest]

The video method did not work for me. My lfs stopped carrying Metronidazole so I did not get to try it. That may have worked with this method.