In the UK carp fishing is big business; so much so, that Andy always used padded mats to lay his caught fish on; before photographing and then weighing them,and then returned them carefully to the water.
Can you believe over here if you catch a carp your not allowed to return them to the water you have to kill them. If not your heavily fined the ozzies consider them vermine.
This would explain this fertilizer !! Dont think we'll be buying any......(yes they mash them up)