Zoas disapearing

[Lomu]

Are this guys making my zoas to close or even to disapear ?

Any help on the ID of this little critters would be apreciated.

Thanks guys

 

[frisbee]

It's possible... I don't trust those Asterina stars at all. Some of them are harmless, but there are others that tend to eat corals. The fact alone that it's hard to distinguish between the two is reason enough for me to remove them on site.

http://reefkeeping.com/joomla/index.php/current-issue/article/45-reefkeeping-101-

http://www.reefsanctuary.com/forums...nthids-closed-care-pests-troubleshooting.html

Those are Collonista snails in the second picture. A harmless grazer, but they can reproduce like rabbits in a tank if condions are right.

http://www.melevsreef.com/id/collonista.html

 

[Lomu]

Thanks Frisbee !!