Mine was a monster the moment I dropped him in my tank. Went hunting for food right away and stood his ground with all the jurks. Watch the teeth when they yawn. They got some fierce looking blades hidden back there.In other reef news I hadn't seen old Melanurus in a couple of days which was odd - he was out for the first couple of days and then he disappeared. Well... He's out swimming today. Fat and happy looking. Still shy so I can't get a stupid picture of him.