You guys, just give me a split and I'll photograph it.
Here's a normal rainbow from my tank:
If you know my photos, I didn't increase the saturation or anything like that. The beauty of this photo comes from timing and light. There was warm natural light coming through a nearby window hitting the back of the nem, and it was "dawn" mode in my tank, so things were pretty blue. I had the chance to do a very neutral white balance and you basically get the whole spectrum of coloration since you have two sets of light kelvins coming in. This is exactly how it looked at this moment. A rare thing.
I'll come pickup the next split, I'll even pay for it

I'll trade some cash + a print,
@Maximus