So need some people's insight on housing a small harlequin shrimp and an emerald crab in a 20g nano reef. Can the cohabitate with each other? Also I have a pair of clowns fish and the female is pretty ornery and likes to tailwhip new things that I add. So the question with that is should I take the pair out and put them in the 100g and take the small clown out of the 100 and put him in the 20g reef? Just been hearing all sorts of things with the harlequin shrimp and what will be ok and what won't be ok.
