white mouth and not eating!

[duendecillo]

Hey everyone,
I bought some new fishies yesterday, some platies. And one of them died the same day, and I noticed like a white mouth...
Now today I see a guppy with the same white mouth, and he's not eating.
Can someone help please?

 

[sylvia]

White mouths are a sign of 'mouth fungus'. Any medication that says it'll treat this will do but make sure it specificaly says MOUTH fungus not just fungus as it is actualy a bacterial infection. A broad spectrum antibiotic such as Maracyn I and II would work and a large water change to improve water quality would also help. Have you tested your water? What are the parameters? Is this a cycled tank? This disease is contagious so watch your other fish don't get it - it would be best to isolate the infected fish and treat seperately.

 

[WILDER]

Yes it columnaris, do a salt bath as well, and add some salt to the tank.