Mystery Coral... ID needed

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reefiniteasy

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I had a Hollywood Stunner that I removed months ago. I was able to remove the chalice so not a trace was left, so I thought. I then glued a new rock in its place and placed coral on that rock. I’ve noticed something orange growing but today I got a good look at it. What in the world is this? I never noticed any orange on the Hollywood which is why I’m stumped.

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Nano sapiens

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Appears to me that it has characteristics of a Mussid, leaning towards a Blastomussa (best guess is B. merletti):

1. Circular form
2. Corallites not large (looks like maybe 1" across, but likely less when comparing with the Calaustrea)
3. Thin longish tentacles around the rim
4. Center of disk area relatively large and of a contrasting color to the thick outer edge

Can you see any small buds developing from the outer tissue area? Do they accept meaty foods?

Very interesting color. I've seen this bright yellow and/or orange color develop in Blastomussa and Micromussa ('Acans') when new polyps are very heavily shaded, but then when they get more typical reef lighting intensities the colors morph into the more typical colors.
 
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reefiniteasy

reefiniteasy

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Can you see any small buds developing from the outer tissue area?

I cannot see anything except what I got in the pictures. For the most part the large one is getting direct light. The little ones not so much.

Do they accept meaty foods?

I have no clue.

Very interesting color. I've seen this bright yellow and/or orange color develop in Blastomussa and Micromussa ('Acans') when new polyps are very heavily shaded, but then when they get more typical reef lighting intensities the colors morph into the more typical colors.

You mention Blastos. I had one on a frag rack not 4 inches from that spot for the longest time. Within the last two weeks I moved it to the sand bed. Is it possible it spawned in some way and it’s a coincidence it’s where the Hollywood stunner was. Or is it possibly some morph of the stunner growing back from a tiny remnant. What a mystery! Thank you for your help.

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Nano sapiens

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Yup, that's a Blastomussa merletti.

It's possible that you might have had some Blasto polyp bailout occur and then a resettlement. You'd need to get a closer look at it or let it grow out some more. Try feeding it and see what kind of reaction you get (if it closes up quickly I'd suspect it's a Blasto).
 

Nano sapiens

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The tile had like 5-6 and now has almost 8 polyps. Are they known to spawn? I never noticed losing one. The things we find on our reef. LOL

Have never heard of Blastomussa spawning in our reef aquariums. More likely (but still somewhat rare) with LPS is a 'polyp bailout' where the animal leaves the skeleton behind to find greener pastures, but this typically occurs only when conditions are very much not to their liking.
 
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reefiniteasy

reefiniteasy

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Have never heard of Blastomussa spawning in our reef aquariums. More likely (but still somewhat rare) with LPS is a 'polyp bailout' where the animal leaves the skeleton behind to find greener pastures, but this typically occurs only when conditions are very much not to their liking.

Thank you for the insight. Who doesn’t love a free coral. Hahaha
 
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Are your corals ever subjected to the open air with no water for water changes or tank maintenance?

  • Yes and I wish I had planned my aquascape better

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  • Yes even though I planned my aquascape for the possibilty

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  • No as I planned for this not to happen

    Votes: 54 24.4%
  • No not yet and I haven't planned for it

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  • Other (please explain in the thread)

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