Has anybody given these a try at all? Any success? I have kept all sorts of fish over the years as an aquarist. And had a farm dam with perch fingerlings once until the kooka burras found them, all gone.
I am starting slowly, I have some large containers, 1000 litres with some tropical fish, cray fish in the bottom, and at the moment only mint growing in the water above. Early days. Has been ok for 3 years so far without any deaths. Must be ready for something more challenging.