I really have no clue lol. You could be right, it could just be genetics, or it could be the head banging. We wont know for sure until someone decides they have too much time on their hands and tries it. And to Hmoobvwj, for example, if a teenager were to break their bone, they would have no problem healing it, while if an elderly break their bone, they still might heal, but it might take a long time and might not fully heal at all. I think it might be the same concept.MsMassPoly;2690324; said:I still think it is genetic and maybe they just have more fragile eyes then other arowanas and the head banging just quickens the process?