Barb With Mouth Problem

[SouthernCross]

One of my odessa barbs looks like he has horrible mouthrot or something - all this white covering his mouth and it looks like its eating away his nose.
 
Strange part is he is still swimming around normally in full colours.
 
Just wondering what it might be and if its likely to be contagious?
 
Have been doing water changes and dosing Melafix but doesn't appear to be getting better - as I said seems to be eating his mouth area away.
 
Apologies, they are too quick to get a decent photo.
 
Stats are all fine, this is a well established large tank (450 litre).
 
All the other fish are fine at the moment...

 

[GetItSahn]

I don't know much about using melafix but if you are doing frequent water changes (which I recommend) and dosing medicine, you're constantly taking out the medicine you just put in. If this is just a mouth fungus then great water quality should help clear it up nicely, that's always how I've cured it. Do you mind saying your stats specifically?
When I first got a tank I brought home a black molly that I knew had mouth fungus in hopes of curing it with some anti-fungal tablets. I introduced this fish into my tank, UNQUARANTINED and she stayed there for almost 2 weeks. Luckily, no other fish developed the fungus/rot and still have never had problems with it. I'm sure there could be different strains that might be contagious but in my experience I never had it "spread"

 

[spencer_41188]

if you're really worried go to a lfs and look for maracyn, maracyn 2 or maroxy if it is a fungus, any of those should help, but you will have to remove the carbon from the filter while the medicine is in the tank

 

[WILDER]

Sadly once the mouth and face start to rot away you are better off putting the fish out of it's misery.
Sorry.