The health of a Xenia Soft Coral is normally indicated by the coral's pulsing motion. In a healthy coral, the each polyp will rhythmically open and close. In a failing coral, the polyps are still. Often, upon introduction to a new aquarium, the Xenia Soft Coral will not pulse; however, once it is acclimated, it will set itself in motion. Moderate water motion is necessary for the health of Xenia. Some may even thrive when placed directly in strong current, unlike many species that cannot tolerate such strong current. Most aquarists consider strong lighting to be important to Xenia; however, these corals may also do well in moderate lighting. Because most Xenia Corals will not accept foods, direct lighting is particularly important, since photosynthesis is the only source of nutrients for these corals. Xenia is not a particularily aggressive coral and is safe for most miniature reef systems.

The Xenia Soft Coral polyps are normally silver-gray or some light shade of brown. Some are a light shade with darker brown borders. The overall appearance of this coral resembles a tree or cluster of trees. They have tall, branching shapes and may grow in 3 inch (8 centimeter) long stalks from the base of the coral. The polyps at the ends of these stalks may be 1 to 2 inches (3 to 5 centimeters) long. They are delicate and feathery and open and close in the pulsing motion characteristic to this coral.