common plecs are bred but you cant in a tank as they need mud to spawn in, as they dig tunnels in the mud and thats were they breed and people in asian countries breed them in big dams and i believe a person in Austrailia does aswell.The reason for breeding B/N's is that they only grow to max 15cm yet a full grown plec can get around 35cm+ and also the fact that they need mud and Bn spawn in anything
cheers Kyle