flagyl is a brand name look for metronidazole in the store its found in a lot of anti parasite medications. Walmart even carries it. you might as well cover all bases. it could be bacterial or parasitic. i doubt its fungal. a pic would be helpful. i recomend the antibiotics and the flagyl and the aquarium salt.
jardini seems to be healing itself. cheers for the help thanks to all. i ended up starving the fish for 2 days and i guess it worked. maybe he was overeating.