Reefer who has kept royal gramma, can share your experience?
This is a description of the fish by marine center:
The Royal Gramma is magenta or purple on the front portion of the body, and yellow on the rear portion. it is a hardy, relatively nonaggressive aquarium fish. It will defend a preferred hiding place from intrusion. An ideal fish for the reef aquarium, this durable fish typically does great in any well maintained aquarium. Grammas can be kept in groups in the aquarium, but they should not be overcrowded and should be of varying sizes. Placing one larger fish and several small fish in an aquarium your increasing the chances that you will acquire only one male and several females.
Do you find it as hardy? how long has it been in your tank?