My wild-type(?)(possibly melanoid?) axolotl hasn't eaten in over a month. It has recently developed lumps along its body and the front of its gills have turned white. It started floating today, and has started to swell and has become uncoordinated. Also, one of its gills has become 'fluffy' (fungus?). Is there anything I can do before it's too late? There is also another axolotl in the tank, that has exhibited no signs; should I do anything in particular to prevent it getting sick?
This are pics of it last week and today.
This are pics of it last week and today.