Help Needed To Save My Socolofi

[crunch7]

Hi all,
 
I found that my Socolofi had developed a red spot a week earlier. Despite doing water change and treating the fish with salt the red spot is increasing and now the fin is tearing apart. I have separated the fish however I dont know what to do. Please help me identify and cure this sickness. He is the main fish in my cichlid tank who used to maintain peace, if he dies there is going to be utmost chaos.
 
https/plus.google.com/photos/102177182849493105693/albums/5944129195850538689/5944129201419600946?pid=5944129201419600946&oid=102177182849493105693
 

 

[fluttermoth]

I think you might need to try an anti bacterial medicine, if you can get one.
 
If not, can you get hold of iodine? You would have to catch the fish and apply it directly to the sore, not add it to the tank.