Coral hitchhiker ID

[Zeeth]

I got some rock KP aquatics with a few hitchhiker corals. They seem to both be encrusting stony corals, but I'm having a hard time telling Stephanocoenia intersepta from Siderastrea radians from Siderastrea siderea. I don't think they're one of the Porites species but I'm not 100% sure. They seem to be two different species to me. What do you guys think?

 

[EeyoreIsMySpiritAnimal]

@encrustingacro

 

[encrustingacro]

If these are Caribbean/Florida LR, then it's likely Siderastrea. I would need some photos (preferrably of non-potato ID) to better tell.

I'm having a hard time telling Stephanocoenia intersepta from Siderastrea radians from Siderastrea siderea.

Stephanocoenia is plocoid and looks similar to Cyphastrea; Siderastrea is thamnasteroid and the species are told apart by whether they are massive or encrusting; and Porites is cerioid.