I thought that I had read somewhere that the blue spiny lobster is not fish safe.....and that they tend to have a liking to fishies.....hmmmmm.....otherwise I think it sounds great. Also, the copperbands I thought are hard to keep fed as they tend to have malnutrition issues. I almost got one when I thought I had the nasty isopods as I hear that is what they like to eat. Then I read somewhere that they are hard to keep in a tank that hasn't been established for a long time with a sump full of pods........