Actually it looks like what you have is a Pictus gecko (Paroedura pictus). It’s hard to tell from the pictures, but the body and especially the head look more like a Pictus than a Fat-tail.

Here are some photos for reference:

Pictus: http://userpages.bright.net/~a1rep/pict3b.jpg

Fat-tail: http://www.the-livingrainforest.co.uk/lrf/images/caresheet/fattail.JPG

Hope this helps. Good luck.