Euphyllia - This is Biota Midnight Torch frag is purple/black with bright green tips. These frags come from cultured corals not taken from the reef.
Give plenty of space for this stinging coral to grow away from other species. Torch corals need moderate lighting and moderate water flow. It's necessary to maintain stable alkalinity, calcium, magnesium, and trace elements. Be sure to acclimate new coral to bright lighting slowly and carefully.