Help! What is wrong with his gills?

[Newbylotl]

]Hi, Im new on here. one of my 2 axolotls ( Newby ) was acting weird,
yesterday when i came home i noticed his gill ( left = white stuff on the top wich is now gone but it looks red with white now ) ( right = curly and really red on the top )
I don't know what this is but i"ll leave pictures..
My other axolotl is acting normal and has nothing and eats good,
Newby does eat but sometimes after he has eaten he spits it out ( i feed worms )
What does he have and what can i do about it? I have aquarium salt in case of funguss
anyway if anyone knows what it is and what i should do.
please tell me! thankyou...
I have pictures in my gallery of his gills ( i don't know how to add them here,
so please look at my gallery!)

 

[Hayleyy]

Can you provide the water parameters (ammonia, nitrate and nitrite) and water temperature so we know what's happening. Do you think the white stuff may have been fungus? If you have a picture of that as well that would be good