Astreopora is one of those corals that you just don't see too often. It is very similar to cyphastrea but has a more pronounced polyp when it is happy; quite often coming in extremely vibrant colours.
This one is almost certain to be one of the brightest corals you could put in a tank with a vivid yellow/green colour that is likely to hurt your eyes under blue/UV/violet light.
The frag has a hitchhiker yellow montipora as a bonus.
Astreopora will take more light than cyphastrea in our experience (at least this one will). We keep this coral on the edge of our SPS trays in medium to high light with high flow.