name of this coral ?

[NanoCrazed]

Can you explain the concentric rings/ridges part? Maybe some pictures to illustrate would help.

Acantophyllia

Indophyllia

 

[NanoCrazed]

trachyphyllia geoffroyi

Robert nailed it. I stand corrected...

Had it in my mind irregular scoly because round with some round edges. Keep forgetting about single polyp trachys... Google and pics are spot on

 

[NanoCrazed]

Trachy like OPs pic

 

[Coral reefer]

Acantophyllia
View attachment 23318

Indophyllia
View attachment 23317

I’ve seen them closed up look kinda like the pic tho

 

[Vhuang168]

Acantophyllia
View attachment 23318

Not sure if I agree with that distinction.

Here are some Scolymia showing ridges, concentric rings.

 

[NanoCrazed]

Not sure if I agree with that distinction.

Here are some Scolymia showing ridges, concentric rings.
View attachment 23321

View attachment 23322

View attachment 23323

Ridges are more pronounced on the meats... based on my own first hand experience across my collection, anyway.

Ridges on scolies are much lighter. If you look at OPs, they're either nonexistent or very smooth (though on Robert's input, its neither scoly or meat.. )

The skeletal structure is different too that adds to it. But you can't see that too well from pics.

 

[Danielfern_]

 

[Rostato]

Finally a good picture. Definitely a Trachy!