Depends on where you are located. Anywhere besides S. Fl and South Texas would probably not work.

You might consider stocking them, harvesting them in the fall, keeping some over the winter indoors, and reintroducing in the spring. I haven't seen much on the temperature tolerance of cichlids but some of the Mexican species(or maybe the Texas cichlid) would be the best bet for cold hardiness.

FTR they do great outdoors in the summer months if the water is above 70.