Hardest (photosynthetic) coral

[encrustingacro]

What is the hardest (photosynthetic) coral?

 

[ChiCity]

elegance (catalaphyllia jardinei)

 

[encrustingacro]

elegance (catalaphyllia jardinei)

I heard that Australian elegances are easy to care for

 

[encrustingacro]

Bump

 

[Tamberav]

Some goniopora can be fairly difficult to keep long term. I am talking unusual wild ones and not the captive red and green ones.

Acropora spathulata are difficult.

 

[Timfish]

I would guess Porites spp. as they have been found to have calcite in their skeleton which is a lot harder than aragonite.

 

[Timfish]

And to be a little more serious if you look at the species we're keeping compared to the species that are never seen in aquaria probably 2/3rds of the stoney corals species still have not been kept successfully in our aquaria.