Well I only hae a 30 gallon and untill last week I had four fish, pair of pink skunks, lawnmower blenny, hectors goby. The lawnmower came up missing. He will not be replaced. I have had the clowns for a year and the hectors goby maybe 8 months. When they are gone they will not be replaced. My fiance has her FOWLR tank. All fish can live in it not in my reef.