Arowana's eating monkeys?

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The fact that arowanas can jump out and catch bugs off branches shows that they have good eyes.
 
Well I know some fish have great eye sight under water but to be able to focus through the surface of the water and adjust for refraction must take some very specialized vision. Dont atleast some species of archer fish have specialized parts of their eyes, part for focussing above water and part for below?
 
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