What's This?

[Shazreef]

Does anyone know if this is a coral?

 

[Psyduck]

Does anyone know if this is a coral?

No photo!

 

[Shazreef]

No photo!

Sorry! I just uploaded them.

 

[Psyduck]

Sorry! I just uploaded them.

I left a comment on your other post. I think it is hydroid. They sting corals and fish so bad but they tend to go away on its own over time.

 

[Elisabeth GER]

Hello Shazreef,

this is a Corynactis as an example

https://www.meerwasser-lexikon.de/tiere/5293_Corynactis_caboverdensis.htm

or a similar species.

It is harmless in coral tanks as it normally grows under stones, while corals grow in the light.

Only in NPS tanks can it become a problem due to abundant feeding.

Kind regards Elisabeth

 

[Elisabeth GER]

sorry
https://www.reeflex.net/tiere/5293_Corynactis_caboverdensis.htm

 

[Tub Life]

I believe the common name is ball anemone.