You should be able to protect pond fish from herons and other predators.
But, whatever methods you are using aren’t working like those other sites said they should. Or at least, they work for a bit and then don’t seem to do anything but slow herons down.
A great example of this is the water sprayer. It may scare them off at first, but they’ll come back once they figure out it doesn’t hurt them.
Herons are smart birds, which makes them hard to deal with.
More and more of your fish go missing or turn up on your lawn, of which both can be difficult to deal with. It’s frustrating and that can quickly lead to heron-hating.
Just don’t hurt them, they are protected by the government.
Instead, you can try one or more of these 5 tactics to protect your pond fish (like the fish tunnels in the video below):
You may also need to protect new fish from your pond water. Introducing them the wrong way can end up making them sick or hurting them.