if that is it (boredom) why do alot of aros that have other aros in with them also have drop eye? Genetics than every aro has to have it? Also did any of your aros get into collisions?, If that happened that may support the idea of silver aros having weaker eye muscles. This can be proven if some one has two different species of aros adn does an dissection of both aros eyes in comparison, is there anyone who is willing, has two dead different aros and can do that?