Feed your pixie more than just roaches. Try some other foods that I suggested. I am new to frogs to and I thought I would never get into them. They are very cool amphibians to have. Pixies and pacmans are my favorite.
Check out this pacman pic I did. They are alot bigger now since I took the pic...You might have to copy and paste it.
http://gallery.pethobbyist.com/index.php?photo=303850


