Hi there! Welcome to the Forum! This is a great place to learn more about frogs.

First off, please read these links:
Frog Forum - Pacman and Horned Frogs - Ceratophrys - Care and Breeding
http://www.frogforum.net/pacman-frog...enclosure.html

It is very common for horned frogs to get stressed out when moving to a new home. They will often not eat for a couple days after moving. So the fact that both of yours ate is very good! Your little one is just a little stressed from all the change and excitement. The best thing to do now is leave him/her alone tonight and offer food again tomorrow. In the meantime, if the sides of the enclosure are open you should cover three sides with some sort of background.This greatly helps to reduce stress.

A couple other notes:
If you are going to be feeding in the enclosure, you should remove the moss. It can cause impaction (severe constipation) if swallowed. Coco fiber is the best substrate to use. Make sure you are de-chlorinating any tap water (including what you use to expand the substrate).

It also looks like little Reggie is a Cranwelli not a Fantasy (Cranwelli X Cornuta). They both look very healthy and cute though! Please keep us posted on how they are doing. Any questions, just ask!