So if you have a lake... you can get them to stay alive and breed. I think Jack Spencer or someone was able to breed them in a Florida pond...
Also these are amazing fish... But if you do breed them you parents are likely to die. IE in the wild they basically will not eat at all once they start spawning, and they will continue protecting there young till they die. (People have seen them protecting "fry" that were over a foot long. When the fish were disected almost all there internal organs were absorbed. IE there was digestive track left all all.)
I think it takes only 2-3 years for them to reach breeding size though I could be wrong on the timing. I know it is relatively short. Though I assume they can live a long time if they don't breed.