Heck with native fish if your stock ever gets stolen, wiped out, diseased (be careful how you medicate food), you can just go out with a net and a 5g bucket and get more breeding stock from rural waters. I'm keen to try it out, but most of what I've read says nothern long ear sunfish spawn like crazy as long as you keep the water warm (but can live in cold water) and one male for several females. Grows pan sized.