Crocodile skink problem

[nono]

Hello. I just had a croc skink for almost a month and from 3 days ago, he started to shed his skin. But after looking its back, i just found there is a white patch on his back near the base of his tail. Is it a fungal disease? Can you guys give me some information about it? Thanks and sorry for my bad grammar

P.S : the second picture is the upper part of my croc skink back

 

[Vicious_Fish]

How humid is your setup? Does it have at least a large bowl to soak in?

 

[nono]

Around 80 percent. Yes. Actually 40 percent of the tank is water and the rest is the soil

 

[Vicious_Fish]

Well that's definitely damp enough for a croc skink. It doesn't look like fungus. How is it doing at the moment?

 

[nono]

Umm. I think same as usual. Hiding while watching its surrounding at day after swimming to finish its business, then it eat its food at night. Does it sounds okay?

 

[Vicious_Fish]

Sounds pretty typical of the species to me. I've never kept Croc Skinks, but I did a lot of research on them years ago when I was thinking about getting a pair. Do you have any substrate for it to dig and hide in? Damp moss works well for this species if you want to keep it natural. Some people even use damp paper towels.

 

[nono]

Yes i have but i am not using paper towel. I give him a layer of cocopeat in the dry part of the tank with some sphagnum moss