Anybody know what this little guy is?

[calf85]

Found him crawling on my glass today. I'm thinking maybe some kind of nudibranch?

 

[mike007]

Is it a snail maybe?

 

[Squishie89]

With those antenna I would agree it is a nudi.

 

[Bongo Shrimp]

+1 to a nudi since it has gills. Thats awesome!

 

[calf85]

Are we sure it's a harmless nudibranch? They've spread and swarmed around my star polyp coral and now it won't open! Coincidence or should I be worried?

 

[SeahorseKeeper]

It could be a coral eating nudibranch.

 

[calf85]

Yeah that's what I'm worried about. Anything I can do about them?

 

[Mike J.]

Well, you reach in and take them out. Put them in a specimen container, and then go to nudipixel.net and identify it. Most nudibranch are not good to have in a reef. Since they're all on you star polyps I'd say they are eating it. They are very good travelers and wouldn't all be on that one coral if they weren't eating it.