G'day Teddy,

If, as you say, the pond is only 1 meter across, then fish may have
problems.
For a start if the pond is exposed to the sun, it may heat up to leathal
levels quite quickly.
Also, if it is quite shallow, once the fish have eaten the wrigglers, which
they will, then the birds will eat the fish.
Netting over the pond will only spoil the look.

China
Wingham
NSW