Once my water temps went below 50, the koi pretty much huddle at the bottom, some in the cave, some on the bottom. I always wonered if they stayed close to keep warm, but I wonder if it's a matter of staying together to warn each other of any danger.
Koi pond ready for winter, goldfish pond was good last year, so stayed the same. Temps here also went from 60 to 30 in a day, now down to the 20's tonight. Brr ... highs only in the 30's for the next week, which is about 20 degrees colder than average. NOT FAIR! LOL I sure hope this is not the beginning of what is supposed to be a colder winter than last winter! I can take cold, but not for 5 months, thank you very much, Mother Nature! Bring on the really cold in January, not in November for goodness sake. I know some of your northerners are used to 5-6 months of freeze, but I am not, and don't care to be either!
Got all of my garden "art" put away inside, too, so all my outside stuff is done. Even planted out the 10 small mums I got a month or so ago, so will see if they come back next year. Planted the patio peach tree and dwarf lilac, too. They had been on the deck in their pots since I got them 2 months ago. It took waiting until the last minute to get me to get that job done. LOL Now I can work on my counted cross stitching for the rest of the winter!