Pond Anti-Heron & Predator devices
In many areas, Herons in particular have increasingly posed a greater & greater predation risk to ornamental pond fish. It is common for me to hear people bemoaning the fact that their prize livestock has been snatched by one of these birds. Other not quite so efficient predators such as cats & other large birds, mainly from the Crow family may be a problem in your location.
Thankfully, there are solutions to the problem of predation. Ensure the survival of your pond fish now by fitting one or more of these deterrents.