What kind of Nudi?

[jfoahs04]

Any idea what I’m working with here? It’s on the glass and there’s nothing similar on/near my montis. Looks almost like a berghia to me, but I’ve never had them.

I’ll try and get a better photo of the top.

 

[jfoahs04]

Slightly better shot of the top.

 

[jfoahs04]

After further review, looks like a Zoa eating Nudi. Not fun, I found him again in some Zoas. Unfortunately, these have been in the tank for a while and are well established in the rocks so I can’t just pull the frag and dip.