I recently read a thread on another site where the owner of a hadoni which he had had for a long time introduced a pair of A. polymnus. within a couple of weeks the hadoni was dead and the owner put this down to the clowns which were very rough. I too, have just lost a hadoni which was doing well until the introduction of a pair of polymnus. I originally put this down to bad husbandry even though I religously check my water parameters and could find nothing amiss.Has anyone else experienced this or is it coincidence ? 