I know this subject has been posted before, "what can I keep with my octo?" and the general idea I've gotten is nothing, really, and that you should only keep one at a time. Then in reading the journals, it seems that there are fish and 2nd octos kept together. I am happy to keep Al by himself when he moves into the 55 gal if that's what is best for him (Al is an aculeatus). For right now I even took the mushroom polyps out and am nervous to get new live rock for interest in case unwanted hitch hikers come along. Am I being too nervous? What are the best kinds of polyps/ stars/ fish (if any) to keep with Al in order to enrich his life?