Not quite understanding why they turn the carp back rather than culling them. The video mentions something about heavy metals and PCBs, but I’m not seeing why t

Not quite understanding why they turn the carp back rather than culling them. The video mentions something about heavy metals and PCBs, but I’m not seeing why that presents a problem as far as, I dunno, euthanizing and tossing them into a landfill? Or even just throwing the dead ones back into the lake? I can’t imagine a dead fish full of toxic substances is any worse than a live one that will, naturally, be dead sooner or later…