I would go after putting them in a pond lined with mud. Keep a high water current. I have never heard of anyone breeding them in an aquarium. Go to the Plecofanatics breeding boards, and ask about sexing them. The males will proably be distinguishable by the larger odontodes, particularly those near the gills. I would guess sexual maturity would come at 12-14". If you do try to breed them make sure to keep them seperated, as they may become aggressive. Also this will avoid anyone else coming along and eating some caviar.