Seems liek a very good idea,i dunno why they havent tried it over here. I guess because of the fish species as mentioned above, what about wollies and coles they get to have like 35cm barra wit hardly any meat on them and yes i know they have a permit to do that, but mabye the same laws could be converted to one of these ponds? Im pretty sure the barras will grow fast and reach a stage of 35cm easily.
Cam