I just uncovered my pond of the black liner I placed over it, over the
winter, checking up on it every 1 or 2 weeks to make sure a hole was left
open, a few times it had froze over and I opened a hole with some hot water
with a bubbler running all winter.

I happy to say that all my fish are down there moving around, slowly, but
moving, one of the smaller fish even came close to the surface while I was
adjusting the airline.

Toronto, Canada