Snail ID - is this a pest?

[marko1]

Somebody has been eating my plate Montipora for couple of weeks now. And my coral is being consumed faster and faster every night.

Two nights before the coral would have filled the whole frame in the attached picture.

I've been looking for Monti eating nudibranchs but haven't seen any. However hundreds of these small snails (diameter < 1mm) appear every night and they like to gather in the Montipora.

Can someome identify this snail for me? I don't think it's responsible for the damage, but would like to sure...


Thanks for your help

-Marko

 

[Sugar Magnolia]

I can't make out what's in the second picture, but the first ones are collonista snails. They are harmless night time algae grazers.

 

[marko1]

Thanks, just like I though. Just wanted to be sure. Now I have to find out who is destroying my Monti.

Actually there's nothing to be seen in the other picture, just a decaying coral

Marko

 

[R_Hudson]

My guess would be monti eating nudis. That's the only thing I've seen that will destroy a coral like that

 

[kyrin01]

Id say some nighttime red light spying will reveal the culprit...