Zoanthids disappeared

[patrickgoy]

I have a 45 gallon saltwater reef tank. Various corals including 2 sections of Zoanthids. The cluster that has disappeared was the first coral I put in there well over a year ago. For a few weeks maybe month or so before they disappeared, they seemed to be closed more than they were open. In a span of 2 weeks, they are all gone with no trace as to where they went. The other coral are doing fine and no other coral was anywhere near it to harm it. Here are the fish I have....

1 Coral Beauty Angel
1 Six Line Wrasse
1 Dragon Goby
1 Clown Fish
1 Emerald Crab

I have never seen anything mess with them other than the crabs eating bubble algae off them when they've had them on there.

ANY CLUE WHAT MAY HAVE HAPPENED?

-Pat

 

[650-IS350]

Have you noticed your Coral Beauty nip???

They're known coral nippers.

 

[ThomasL]

Worms?

 

[STRATNEST6769]

Emerald Crab GUITY!!

 

[Finnaddict]

Zoa eating nudi's?

 

[nate12]

check your water parameters. either your phosphate is high or your alkalinity is low. There are many reason why they close but usually is water quality. I just learned that out myself

 

[ajespo85]

Angels are known to eat polyps.

 

[Scranton]

I'm blaming astral stars in my tank. Looking for a harlequin to take care of that

 

[DropTheB]

you said they were closed for a while. I had a colony of rastas close up and then start detaching. Maybe that happened? Check your filters or dead spots in the tank