Can I Get Anti-Biotics?

Most pet stores sell antibiotics for fish.

"Jonathan Wood" wrote in message
link.net...
I have a wild fish (bluegill) that was caught with a fishing pole and
hook.
It's been doing okay in my tank (eating and behavior), but the hook sores
above its mouth have now caused a swelling in one side of its nose.

It looks to me like some sort of infection. My water isn't great (nitrates
are pretty high--I'm doing some water changes but have had some trouble)
but
the other fish seem to be doing fine.

I was just wondering if it's possible to administer antibiotics to this
fish, and if they can be purchased without going to a vet.

Thanks for any tips!

Jonathan