Snake Identification Help?

[kenj]

I have a picture of a snake. No recollection of that it was called. It's a picture from the zoo, I believe. Here's the picture:
https://scontent-a-lga.xx.fbcdn.net/hphotos-prn2/1381450_1453103264914015_253739462_n.jpg
Thought it was quite a pretty snake, so I wanted to know what species it was.


Also, I have no idea how this website works.