Mine would sit on top of the nori clip and if you got too close to the tank he would start swimming in circles never leaving the clip. First time he did that I thought he was stuck so I went to "save" him and he bumped my hand letting me know I was in his space and swam away. Problem was, that was his clip and he wouldn't let any other fish get close to it so I had to have a separate clip for everyone else. He was about 2 yrs old and just didn't get out of bed one morning, no idea what happened to him but he was large when I got him so I really have no idea how old he was.
I cant imagine having a reef tank and not having one of these fish in it.
Scott
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