I have seen so many people on this forum with exspensive fish with their mantis shrimp, meaning that they do not believe that mantis are agressive towards tank mates. I am re-assembling my 55 gallon tank and have my fish in a friends tank and my mantis still in his tank (peacock). I have realitivly few fish to begin with, two marron clowns, 5 fire fish, a mandrin a blenny and a potters angel. What I am trying to say is do you think it could put my mantis in my 55 with my my fish?. I have the opinion that anyone who tries it is crazy, but it trials that show the truth. So please try to pursuade me with photos for proof.