Unfortunately most of us will never get the opportunity to see an arowana in the wild. I personally don't believe an aro could even survive in the wild with DE. Do wild aros get DE? Possibly but if they are not able to recover from it, I believe they would perish.
Here is a good video, has some expanation regarding the vision of the arowana.
[yt]
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[/yt]
Here is a good video, has some expanation regarding the vision of the arowana.
[yt]
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[/yt]