Zoas are often high sting where a few of the larger polyps are more benign. Watch Tranny and if you see him jerk when he touches the rock then I suggest removing it. O. briareus just won't go around things (I think it has a lot to do with their close vision and believe them to be quite far sighted) and in a small tank (vs the ocean) this is a problem. Keep in mind that when corals send out their little needles, they stay in the water. I don't know how long they are active but I do know I have felt them without touching the coral.
Oh, something I have not thought about in a while. I have seen two of my adult O. briareus try to pull up mushrooms that they decided were in their way (they were in front of a den opening). Neither succeeded and the mushroom survived the molesting but it was strange to observe.
Oh, something I have not thought about in a while. I have seen two of my adult O. briareus try to pull up mushrooms that they decided were in their way (they were in front of a den opening). Neither succeeded and the mushroom survived the molesting but it was strange to observe.