I don't think they should be banned if you can provide the space for them i.e. large MF ponds 10' dia. or more. In a pond you don't have to worry about them busting through the tank, and they are free to swim in circles instead of into glass walls they can't see. Ponds, a much better environment for your monster catfish. Much cheaper than glass too if you do it right. Just my two cents. Oh man, I hope my hybrids get as big as those wild counterparts of the adults.