fish
 

need more imfo winteriing trout 900gal h2o koi mayed it last year no freeze up rainbow with koi manitoba canada o ya 28 blow today

How deep is the pond? Koi are touch and go here to make it over the winter, I think trout need an even deeper pond than koi to survive. You'd be better getting in touch with a trout farm to find out more about them.

clm