Hi just saw pic of your pleccy,i had a huge tank a few years ago 6ft by 6ftx3ft wide.I had 2 huge oscars around 18 inches long and 2 plecs arond the same size,maybe a bit bigger.They were carnivorous and ate live food,and their bodies were solid like they had armour plating on,and very strong 1 ended up down my top when i emptied and sold the tank!