Herons can empty your pond of fish in a single visit and there are various ways of deterring them.
The Pontec Decoy Heron is one of the simplest and easiest ways to help keep these predators at bay, as herons are territorial so usually avoid each other.
Simply place the decoy heron near to the pond edge, even within the marginal shelf area itself. For best protection reposition the heron regularly every few weeks.
This realistic and tasteful decoy heron stands around 75cm (30 inches) in height and comes complete with legs and a detachable fixing stake.