Good call. Ill pop on a cfl clamp on with a timer. It will be a good fix for now until i build something a little more elegant. My other tank 12g edge seems to be doing pretty well with just leds. Will adding to0 much lite affect the fish negativity in any way? (sames question for breeding)
I don't know what kind of fish we're talking about and I don't know a lot about fish. My Pristella Tetras don't mind it - they just hang out under plant overhangs, and they're supposed to be forest fish. They travel together so they do spend a good amount of time in the light. Their coloration is not pale at all - I think it's very good for tan gravel.
If a specie of fish doesn't like sun, some floaters might be helpful or some bog wood or rocks. I think breeding needs low water circulation where they are spawning.
So take this link and look them up in the fish directory: