Awesome nudibranch id?

[Vilas]

Wow, my phone wants to talk about the nude ranch in my tank?

Anyways, any idea what this stunning little guy is? Sorry for the awful photo. He is small, maybe half a centimetre. Neon green! I have several other nudis doing well in my tank, but this is a new one on me.
Thanks!!!

 

[Sugar Magnolia]

Looks like an aeolid nudibranch. They're coral eaters. http://reefkeeping.com/issues/2005-05/rs/index.php