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Help With Acans... Something Taking Chunks Out Of Tissue?


Steensj2004

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Steensj2004

Long story short I recently got these and they show full extension daily, eat well, and are very happy. I looked at them before bet the other night and 6 hours later they were missing a small chunk on the outer rim of a single head. If you look at the picture, you can see the pinkish-red spot where the tissue is missing. Are sexy shrimp or Urchins coral eaters?! I have no idea What the heck cause it but something took a chunk outta it. It still is happy and shows full extension... Just confused. Also there are no corals close enough to sting it either... Ideas?

 

Something had to have taken a chunk outta the heads... No way it lost tissue like that in a matter of a few hours...

 

FYI, the picture of the damage was taken after lights turned off, coral was pretty shrunk up...

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Sexies are known nibblers of zoanthids unless you feed them heavily...I think they are your prime suspect?

 

Any fish?

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Steensj2004

Sexies are known nibblers of zoanthids unless you feed them heavily...I think they are your prime suspect?

Any fish?

Yeah:

-Very small Clown

-Purple fire fish

- Hi-fin

-ORA Mimic Blenny....

 

 

No real nibblers

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Steensj2004

Tuxedo urchin... No algae on the frag.... And the Blenny hasn't appeared to touch anything like that as far as I can tell. That doesn't mean he hasn't though.

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What other corals are surrounding it (within 6", even 8-10" if there are very large LPS colonies near by)? I had a couple polyps of a nice rainbow acan be ripped to shreds overnight after my merulina decided to throw out 4"+ sweepers for the first time ever (and I've had it for nearly 2 years).

 

The acan was missing half a polyp overnight. The next night I broke out the flashlight and sure enough - the merulina had some MASSIVE sweepers (like bigger than a stunner chalice) and that was what did the damage.

 

Some corals can never have sweepers for months, even years, and then all the sudden throw them out one night. I would stay up and watch with a flashlight.

 

While your fish can nibble, and so can sexy's - they don't usually do that much damage that quickly - it sounds more like another coral.

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Double check your mimic blenny. I had a starry blenny that really, really liked my firecracker favia frag. It would scrape the tissue off and would expose some skeleton. Once removing the frag to a basket in the tank and removing the fish the frag recovered. I know mimics are supposed to be reef safe but blennies are a "with caution" fish imo.

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