I have a theory for that. It runs with the head trauma. I have noticed that my aros all seem to have a side they breach to. Much like being right or left handed. The side they breach to gets the brunt of the hit and thus gets the de on that side. Something I have noticed with my aros over the years.If food is one of the reason why aros get DE, how come DE happens sometimes on 1 eye ONLY? It should be both eyes. I do not think people get fat to 1 cheek or 1 arm only. haha I guess it is more about head trauma and genetics; too much mass breeding instead of selective breeding. What if the silver aros are bred from parents which already have DE? Chances are greater that the young ones will have DE too; genetics
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