pls help quickly

[noelberg]

There is a white spot on my female swordtail's mouth. This developed yesterday and she's been slowing down lately.

My other female died Saturday night and I couldn't get to a lfs yesterday, so my male picked on her constantly for a good 24 hrs.
What is this and how should i treat it?

Thanks!

 

[noelberg]

here's a terrible low rez pic if it helps ...

the swordtail that died saturday also had this spot on the mouth

 

[noelberg]

pls delete this thread. she's barely moving now

 

[Feline]

Looks like it's mouth fungus. It's contagious and you'll have to treat the whole tank with medicines that treat fungus.