White dot and gills less volumous, fungus?

The last two months the gills of my axolotls have slowly been decreasing in volume, it looks like the gills are losing theit "fluff". They are regenerating the little red wires so at the tips theres a lot of little new ones.

Especially my dear spartacus isnt doing well, the tips of his gills are kind of colourless and are dropping downwards. I don't see a white haze, but I think it still might be a fungus?

Another thing with spartacus is that since a few days he has a little white dot under his eye. It kind of looks like an infection beneath it's skin, but thats what I conclude about when something gets infected with humans and when underneath the skin a white dot forms.

I've been having them for two years now and haven't changed anything frmo how i normally treat them. Any idea what might be wrong and how I could cure this?

Check the water quality and do frequent water changes. When there is an injury in the tank I add a small amount of salt to the water(about 1 teaspoon per gallon or so). Give salt baths if it looks like fungus. My axolotls tank had accumulated quite a lot of waste so I put salt in to kill some of the fungus in the tank and the water changes that followed took the salt out gradually. There was once a huge white fluffy fungus on my axolotls gill that developed overnight and I gave her one salt bath and used a q tip that I dipped in a VERY STRONG salt solution and brushed it against the fungus. The fungus fell off after one bath and the axolotl has been fine ever since.

From your pics it doesn't really look like fungus and it may be the other nipping at gills? If they could be nipping at eachother separate or increase feeding.