ls5292 wrote:I am not trying to be a pain in the _ _ _ but according to the profiles on this site the yellow lab is a peaceful fish towards other species and the electric blue is mildly aggressive or is it one of those thing that every fish is different. If I do get these I think I will try a species tank for a while and then put a male yellow lab in with them and keep a close eye on them if that works add a female.
I have no idea which fish you mean when you say electric blue. If you mean Sciaenochromis fryeri, no way would I combine them - from my experience my guess would be the S. fryeri will get too large and aggressive for the Flamebacks to show their best.
I would also say the odds are good a single male yellow lab will end up being too aggressive to have the Kyoga Flamebacks show their best. If I were to do labs I would opt for 3-4 females instead if you want the look and lower aggression.
I first kept mine alone - very skittish, not much color.
Then I had them in with Yellow Labs, Pseudotropheus sp. ''Minutus Tanzania'' Manda, & Pundamilia nyererei (Ruti Island) - they never really colored up much even though no one picked on them directly - never a torn fin or hiding behind a heater. They pretty much looked like this all the time

Mine completely fired up within an hour when they were put in with 3 younger Malwawi Hap/Peacock species groups - Aulonocara stuartgranti (Chiwindi), Otopharynx lithobates (Zimbawe), and Placidochromis sp. "Blue Otter". They went from almost no color like the photo above when in with mbuna to what you see in one evening. My wife couldn't believe they were the same fish. The males never spared like that in the mbuna tank.

The Aulonocara stuartgranti (Chiwindi) male may end up being too aggressive in time as he grows - the Otopharynx lithobates (Zimbawe) seem about perfect as far as temperament to go with the Flamebacks. The Placidochromis are, well, Placid as has always been my experience with them.
My experience, I am sure other people can chime in with different experience - I expect that your mileage may vary.
But I really think you need to consider if the Flamebacks do not feel very comfortable, they will show you very little.