Go to your vet and ask for metronidazole, but you need to explain what it is for and how you are using it. Ask to talk to the actual vet, not one of the front desk staff. They should carry it, but they use it for another purpose, not aquatic.

Big Al Online Canada sell metronidazole so no need to bother with the vet.

http://www.bigalsonline.ca/fish/metronidazole-5-g.html

I don't have any advice on what it could be but I do think its a rather sad state for an otherwise cool fish. A month is a long time to live that way and a testament to how tough groupers are but I think I would be sending him to ichthyological heaven by now.

He is starting to come around to be honest with you. Why would you just kill it because it is sick when there is a way to maybe cure him. Would kill your dog because he is sick with out seeing if there is something you can do for him. I have been hand feeding him he is getting stronger everyday now. Thanks for bluntness but I don't think you should be giving advice as you obviously don't think a fishes life has value. That's is all!

God bless you for thinking of the value for the animal's life, swill. Hope with your effort and with your good heart, this fish will pull through.

If my dog was paralyzed and had to be handfed for over a month to remain alive - yes, I would have it euthanized. No offence but I think you have lost consideration for what is quality of life....and by your own admission the fish appeared so sick you never thought it would survive more than a day or 2. Perhaps you ought to reconsider criticizing someone else's morals and ethics and reflect on your own first.

i agree, id euthanize myself if i was paralyzed and had to be hand fed too.

I bet you wouldn't kill yourself...if that day happened you would be thankful for everything...

swill, I can't believe it's still alive :surprise:
It's possible it has an intestinal blockage which is causing food in it's gut to press against it's swim bladder, amongst other organs.
If that's the case, I'd suggest you keep feedings down and try to feed it something that will help with digestion.
If it ever starts to recover, again feed it something to flush it's system.
For us it would be fibre ....
Good luck !

And regardless of all the flushing suggestions you've had, if it's not twitching and so on .... just laying around ... I'd say it's not suffering.
You never know, it may come around.
Such a beautiful fish