Size: Fully matured adults will have arms up to 10″ in length. Juveniles are most common and can be as small as a dime. Light green to tan; pentagonal disc with thin dark reticulated lines; long arms with dark banding. Inhabits sand and reefs, often only extending arms from within live rock to feed. Very beneficial for marine aquariums, they help to remove detritus and uneaten food from aquarium.  Reef tank safe.  A very gentle species. Note: Brittle Stars will often come out of the rocks during shipping. It is important to do a careful inspection of the bottom of the bag and towel, place all living starfish into your tank. Sea Stars will regenerate lost limbs.