Radioactive Dragon Eye

This morph earns its name under actinic or royal-blue LEDs, where the green face glows enough to stand out in a tank full of other fluorescent corals. The blue ring is the detail to check when buying. On good stock it is crisp and clearly separates the face from the skirt. On washed-out or mislabeled frags it blurs into the green. Polyps are small to medium and the colony fills in evenly, without the long stalks some zoas grow. Because it is all green, it looks best next to orange or purple zoas rather than other green ones. If the face fades to pale yellow-green, check whether lighting was raised recently before blaming water chemistry.