Ensuring survival of Rainbows in private farm pond

[Reinchampion]

I have a friend who just started managing a ranch down by Cochrane this past summer. On the ranch is a pond with some nice size rainbows (20" to 22"). There is an aeration system set up with a wind mill. His question, which I could not answer, is: is this sufficient to maintain the fish through the winter? Or do we have to have open water in order to be sure the fish are getting sufficient oxygen? TIA.

[Flieguy]

if the aerator works then it should be fine. I know of a one-acre dugout that's aerated with a windmill that overwinters SW of calgary no issues

[catnthehat]

Howdy!
Give Northwinds a PM, he raises trout
Cat