Sundial or collonista snail?

[Nate_Krohn]

All of my zoanthid frags starting disappearing over night and I noticed these snails a few days before I noticed my zoas gone. If anyone can ID them for me that would be much appreciated. Need to know if I need to completely wipe them out or not. Has anyone else had their zoas disappear within 24 hours? And If they’re sundial snails will they eat my palythoas? There’s literally a thousand of these suckers in the tank.

 

[Nate_Krohn]

These are my zoa frags

 

[Tahoe61]

Take one out and take an image against a dark background.
Looks like Collinista in the image.
Remove frag at night and inspect.

 

[Nate_Krohn]

Take one out and take an image against a dark background.
Looks like Collinista in the image.
Remove frag at night and inspect.

There’s nothing left of my zoas at this point... just frag plugs now. But yes I will take a better pic

 

[Nate_Krohn]

Another pic:

 

[Tahoe61]

Looks like Collinista to me. Sundials are typically found on the food source not all over the rock work.
Have you checked for Nudi, Asterina Star, what fish?

 

[Nate_Krohn]

Looks like Collinista to me. Sundials are typically found on the food source not all over the rock work.
Have you checked for Nudi, Asterina Star, what fish?

Haven’t seen any nudis at all, I’ve seen one asterina star. I have a mandarin, file fish, yellow tang, clown pair, diamond goby, and a bicolor blenny. I HAVE seen the tang and filefish picking at the zoas but I thought they were just picking at stuff around the polyps.

 

[minus9]

What filefish?

 

[Nate_Krohn]

What filefish?

Aptasia eating

 

[CindyKz]

My matted filefish loved to eat zoas. I couldn't keep them until I rehomed him.

 

[Nate_Krohn]

My matted filefish loved to eat zoas. I couldn't keep them until I rehomed him.

My matted filefish loved to eat zoas. I couldn't keep them until I rehomed him.

this was the only file fish at the lfs that wasn’t in a frag tank