[AllCichlidsAllDay]

 

[DJRansome]

I don't think this is really a green fish, I think the lighting in the photo is making it look green. The dorsal stripe makes me think white lab or socolofi, but the shape does not look like those fish. I am not good at ID however, so maybe the people who hang out here in Unidentified will do a better job.

 

[Sinister-Kisses]

It's the lighting, not actually a green fish. I think it's likely a socolofi, the angle and the clamped fins are making the shape look odd in the photo I think. But could be a hybrid.

 

[SenorStrum]

I agree with the folks here. That's not actually a green fish, but a trick of the light.
Black tips on the top and bottom of the caudal fin, along with faint barring lead me to think it looks like a scared female Elongatus Chewere. If that is the case, the look you're seeing is a fairly temporary state.

The first two pictures are the female Chewere I'm speaking of. They can really turn their colors off if they want to.