Thanks Scott. I was leaning toward crypt since it can make a fish loose color also. I'm now thinking velvet too. With as bad as it was covered last night, I just left it. It's swimming upside down this morning. Probably a good thing I left it instead of throwing it in w/my healthy wrasse in the QT.
Now I don't know what to do about the goby. I can't treat it with copper since it can't handle it. To little copper, it's not effective anyway....
If the goby makes it then the velvet can potentially have a host and I can't leave my tank fallow. That goby is my last fish. I'll have to take out all the rocks and drain half the tank just to catch him and then I don't have anywhere to put him.