Austin,
I agree with you.....he is thin...sorry

If you do not have a near-by herp vet. You need to email Dr Frye.
He will likely need you to overnight a poop so he is able to a fecal sample on it; then mail you the appropriate medication to treat your frog.
Keep this frog in a hospital tank with dampened paper towels ( de-clorinated water) , water dish , dust his feeders, don't ration his food.
Maintain proper temp and requirements in the hospital tank. Change the paper ......minimum every other day and the water dish daily !!!!( so make yourself lots of de-chor water in leftover gallon/water container(s). Wash you hands! or use powerless /disposable gloves. Let him rest - undisturbed during the day....don't handle him unless it is absolutely necessary.

http://www.frogforum.net/tree-frogs/...caresheet.html

If he has a parasitic infection that goes untreated ........you really risk losing him This is VERY easy to treat !

Dr Frye's contact:
http://www.frogforum.net/tree-frogs/...-prepared.html

When emailing Dr Frye include the measurement of the frog ( snout to vent) ,whether the frog is captive bread or wild caught, how long you have had him and the photos you have posted here.

If you should get a medication that needs to be dropped on his back? apply it AFTER he goes back to sleep so he is not stress by being near you. As much as we want to think are frogs like us --------they don't !!!

Lynn