Guys, I can't imagine 90 degree anything, just doesn't happen here, 30c in summer is smokin hot and not typical. Died, no fish in my pond, I know it's almost a sin but I can't get trout to survive through summer. They will live through 200 days of ice cover and go belly up by August. I have mostly given up on re-stocking and have let nature take it's course, the pond is now a refuge for a vast array of critters, last year I had over 40 baby ducks raised on my small pond. I like it, and I don't have to choose what birds or animals conflict with my fish goals, bring em on. The lack of fish has also resulted in an explosion of scuds, amazing numbers.
I fish the local lakes and live vicariously through you guys and this site.