clownfish white mouth

[Jesusreef]

my clownfish mouth is white and a little swollen! she keeps scracthing at the mouth! she is still eating and swimming fine. I introduced a anemone but it was very small and the clowns beat it to. death!! so I don't know if it's stressed do to lossing the nem, or if it's something else. I was thinking it may be Brooklynellas but there is no slime!!