A lot of people seem to be using trout in their aquaponics systems.
Raising trout would be a natural for me
as I have a very cold year-round creek a hundred feet from my house.
(I haven't measured the temperature,
but now and then one of us has to take a deep breath
and turn the valve located 40 inches below the surface
for our domestic water system,
and it's an instant brain-freeze!)
And trout grow very well in our local glacier-fed rivers and streams.

But how the heck are my tomatoes supposed to survive
having their roots douched every hour or so with icy cold water?
I know that when the air temperature gets down to 60 degrees
my tomatoes and peppers just go cross-eyed.

Please educate me on this one.