Usualy cloudy eye signs poor water quality.Eye problems are usualy one of the first signs of poor water quality. If it was a tankmate, there would probably be more physical damage/trauma.
Keep the water prestine and he will be fine.
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In the payara, the red cyrcle seems a lot like trauma to me.
It's like theres blood in the eye.
Eye not cloudy at all.
About 2 weeks ago i had a PBass from this setup with eye problem also, not cloudy, not red, but poped out and a little white on the edge.
This wasn't from bad water quality for sure, the day before i made a water change.
All these signs to me a much stresfulll setup and not so much bad conditions.
And if this is true, i would like a second opionion to seperate them and change this aggressive setup...
Edit: OK mate, thanks very much.