Kay muttered:

In article , Magwitch
writes
We've only used native species (fish and plants)

Where did you get your native fish from? I've seen tench on sale but not
much else.

A friend who is an angler brought them round in a bucket one evening this
last summer, he'd bunked off work and spent the afternoon fishing, also
brought a few native carp - doing well so far as they are camouflaged
against the herons )