Mold on my snake...?

[ConcinusMan]

I can't tell anything from that photo except that it looks like a pretty handsome T. ordinoides. I've seen captive ordinoides develop blister disease overnight, caused by poor husbandry though. T. ordinoides do seem very prone to skin infections, especially if they get injured. Could also be water trapped beneath old skin, due to failure to shed. Sometimes the skin breaks and a little water comes out. It is possible I suppose for a fungus to grow between the old skin and the new, especially if water is trapped there. It wouldn't hurt one bit to let that snake get some UV exposure from natural sunlight or UVB emitting bulbs. Fungus and bacteria tend to not do so well with UV exposure.

Seems like you might have female there. Very similar to this one currently in my care: