Slug? Nudi?

[Reefmob]

IS this one bad?
What kind is it?
Does it eat zoas ?
If been missing some !

 

[Reefmob]

Another

 

[carried]

Nudibranch. They eat coral so depending on if you want to keep your corals or the nudibranch it's up to you.

 

[Reefmob]

I'll go with corals!!
Thanks !!

 

[Sniperhank]

I toss my nudibranch I find into my sump to keep them out of my DT.

 

[Rutrag]

Looks like the zoa eating type to me. I had two, but they seemed to only like one particular colony in my tank. Once I figured out what they were, I siphoned them out and flushed them.