Green sunfish tank mates

[TwinOne]

I have a green sunfish iv had since he was a fry, he's a year old and about 6". He's in my 150g tank with a 15" pleco and an XL angelfish. They all have been in this tank together for just over a year and get along great. I was thinking about turning it into a cichlid tank and was wondering what types of cichlids would work best with him? Thanks.

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