I'm sorry to report this but he died.
He must've had a parasite, he was eating fine, lunging at me when I put my finger against the glass, etc. I know I didn't do anything to kill him, it had to be the seller at the expo, who had some super skinny white's tree frogs and so many other animals it made me hard to believe he was breeding each and every one. I guess this is what I get for not being able to keep myself from buying a frog instead of waiting for a better seller to offer them.

I never had any luck with any ceratophryidae frogs, they always end up dying a few weeks later for no reason.