Hi JP,

Such a beautiful place, England :-)
Since you have a water source that is coming into and out of the pond you need
to have native fish only.
You probably have a local or regional fish and wildlife authority who can
advise you on your local native fish and may even be able to help you stock
your pond. Private land owners are a good resource for keeping native species
thriving.

good luck!

kathy :-)
A HREF="http://www.onceuponapond.com/"Once upon a pond/A