Acan Damage

[othercents]

So I was moving rock around in my tank and noticed this damage to one of my acans. Does that look like damage from a larger crab or a small hermit? Does it look saveable? I think there might be two sections down on the bottom edge undisturbed.

 

[Cake_Boss]

Looks like it's receding, leave it in there LPS can come back after a few months

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[othercents]

receding? Interesting... As long as it wasn't eaten. I was planning on mounting all my frags now that the rocks have been placed, but didn't want to do it if I have something eating stuff.

 

[Cake_Boss]

It may have been picked on, especially if it was dying already

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[Wicked Color]

pep shrimp? tang? butterfly? filefish? angel? all culprits...

 

[othercents]

pep shrimp? tang? butterfly? filefish? angel? all culprits...

That narrows it down. I only have a Pygmy angel out of your list. However the rows of damage are so symmetric that I think it wouldn't have been a fish, but maybe a crab. I do have a Sally longfoot, cleaner shrimp, and some hermits. I don't want to mount the rest of the acans until this is resolved.

 

[Wicked Color]

sally, and cleaners also culprits....

 

[katyttt]

I have also watched several pygmy angels devour LPS and even xenia, they are sneaky about it though.

 

[othercents]

My xenia looks good. The other acans look good and I would expect an angel not to be able to leave the dramatic lines that you can see in the picture.

 

[Wicked Color]

Those lines are the skeletal structure showing thru the receaded/withdrawn flesh, not really an indicator of who is doing the damage.

 

[othercents]

Those lines are the skeletal structure showing thru the receaded/withdrawn flesh, not really an indicator of who is doing the damage.

Ok, thanks, good to know.

 

[Wicked Color]

If there was a predator present the acan would most likely be gone now, I would think water conditions or a pre-existing condition within the coral.

 

[othercents]

Shortly after I got the three different acans I switched tanks which shocked them with cold water (2 hours), low flow (20 hours), and no food (20 hours). This one was the only one that looked flat, however it was still eating somewhat. The other two (pictured below) look more puffed up and round compared to the other which had more of a triangle shape to it. I guess that the original prognoses that it died and was then consumed is probably correct. I'm hoping that I can salvage part of this Acan since there looks to be two heads on the side of the rock, but neither have feed.

 

[Cake_Boss]

They look like they can use some shade also

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[othercents]

They look like they can use some shade also

Shade? Interesting... They are currently in the frag rack about 6-8" away from my 4x24 T5 lights. Now that I'm mostly certain that they won't be eaten I can move them down into the sand, or somewhere midway between their current location and the sand.

 

[Wicked Color]

Shade can make an everyday acan totaly kick azz.