K wrote:
So if you have a blanket weed problem, green
tench are better. They're smooth and streamlined not knobbly and spiky.
You put them in when small, they disappear for a couple of years then
reappear 9 inches long and very fat, basking at the surface and making a
huge splash when disturbed.

K, how might green tench cope when flow into and out of a pond during
summer months stops and natural oxygenation is poor?

Ellie.