Illness/Sickness: My axolotl has white spots all over his body. Is it a fungal infection? Could it be something else?

[narcissus]

Hello. Few weeks ago I noticed white spots on one of my axolotls, I have two of the little creatures in my aquarium. I have searched the internet and it looks like columnaris or sapolegnia, except he doesn't have white fluffy attachments to his gills. I seperated axolotls, left healthy one in cycled and cleaned water tank, and put sick one in quarantine tub. I did daily 10-20% quarantine tub water changes, also filter the water. I am holding sick axolotl for 15min in black tea bath 3-2 times a day. Maybe you could help me with the diagnosis and treatment recommendations? What else can I do?
This is Narcissus. He eats well and otherwise seems alright (except from occasional floating).
Thank you!

 

[wolfen]

if your axolotl is male then you have an issue as his girth is displaying symptoms of edema, read Axolotls - Requirements & Water Conditions in Captivity and use holtfreters solution at 100% to possibly reduce fluid build up, if he is a she then there is a slight possibility of being gravid.
using holtfreters at 100% will help to deal with fungal issues as will methyline blue.
what is you ph and kh gh if possible.