I was at the California Academy of Sciences this weekend and noticed what appeared to be 10+ cuttles in a relatively smaller tank (guessing around 75G?). There were also several juveniles in a plastic container on the side. This seems to be more than what Richard originally suggested in his 2009 article: Perhaps the stocking density guidelines has risen as long as there are enough nooks and crannies for these guys to hang out in? (There is a chance I just totally blew my guess on the size of the tank as CAS). BTW, I also did not see the flamboyants. It looks like they had been moved since there was a black ribbon eel where they used be and the tank marked for the flamboyants near the other cuttles did not appear to have any in it.