u/Lopsided-Anxiety-679

I have a bonded pair of clownfish that have been in this nano 15g for eight months, always healthy and happy. No changes to tank in over four months…cancer in the family and I have been gone for multiple days at a time over the last couple months and I haven’t even tested any parameters - the zoanthids, GSP, snails, hermits, and Acans are all in good shape - the tank appears healthy and is stable with no excessive algae.

I was gone for a few days and came back to see them active and hungry, acting normal, but their mouths are white and it doesn’t appear to be a growth, just not bright orange like they were before

fighting?

bacteria?