What the heck took a chunk out of my SPS

[groupergenius]

I check all my corals and fish everyday. Today I get home and ....what happened???? It looks like something took a bite out of one of my corals.

Is there maybe a disease that would take a chunk out like this in 24 hours??
The fish stock is:
1-Foxface Rabbitfish
1-Lyretail Angel (supposedly reefsafe)
1-lubbocks wrasse
5-Blue-green Chromis
6-Emerald crabs
Astrea snails
And just found 2 nights ago a very small 1/2-3/4" mantis shrimp

 

[jonthefishguy]

You have a crab that is a hitchhiker, LOOK for him.....We had one and watched, it was a crab that was doing it. I took that crab gutted him and fed him to the fish.

 

[groupergenius]

Originally Posted by jonthefishguy
You have a crab that is a hitchhiker, LOOK for him.....We had one and watched, it was a crab that was doing it. I took that crab gutted him and fed him to the fish.
Well I have the 6 Emeralds. Also I have alot of SPS in here and this was the only affected. So far. And it is about 3" up from the base.
Trust me though, if it is a critter doing it, I will eat it. Cooked or not.

That's how PO'ed I am.

 

[paintballer768]

Originally Posted by GrouperGenius
Well I have the 6 Emeralds. Also I have alot of SPS in here and this was the only affected. So far. And it is about 3" up from the base.
Trust me though, if it is a critter doing it, I will eat it. Cooked or not.

That's how PO'ed I am.
Pics when you do. Looks like something a crab would do, or just big enough for an angel mouth to fit in the hole. Good luck

 

[groupergenius]

Originally Posted by paintballer768
Pics when you do. Looks like something a crab would do, or just big enough for an angel mouth to fit in the hole. Good luck
Yep, it looks like a sharkbite or something. I could see a parrotfish or trigger or puffer taking a perfect semicircle like that. It's really odd that no other of my 15-20 corals are affected.

I might pull the coral out later to get a better pic.

 

[grabbitt]

Ugh... That reminds me of my trip to the LFS earlier... I watched a chunk get taken out of a Bangaii Cardinal by a MONSTER snowflake eel.
I realize this is both random and pointless.
For that I apologize.
What I'm trying to say is: Good luck finding the hitchhiker

 

[groupergenius]

bump

 

[groupergenius]

Originally Posted by jonthefishguy
You have a crab that is a hitchhiker, LOOK for him.....We had one and watched, it was a crab that was doing it. I took that crab gutted him and fed him to the fish.
I'm thinking the Emerald crabs. Now to devise a trap to catch the little buggers.