What is this?

[Magem]

Could you tell me what kind of pest is this? How can I stop it?




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[Magem]

I have decided to glue the perimeter affected. Hope this could stop it...


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[ivanotas]

Algae growth on stn portion on coral?

 

[organism]

Where is the pest? All I see is some STN with algae growing on a bit of it like ivanotas said... Putting superglue on that is a great way to stress the coral out and get more STN imo, I'd just leave it alone and figure out what's causing the STN.

 

[ivanotas]

Agree with organism. If it stn. Leave it alone for a few days. Once stop and you are still eye sore.. Just cut the stn portion.

 

[ADVRESOURCE]

Without a better picture, looks like rtn. But, lots of stressed corals go brown. If has thick tissue, leave alone for recovery? I wouldn't superglue!