With the weather cooling off, it is time to start thinking of or start moving the fish that need to be moved out of the outdoor elements and in to an environment that they can be comfortable in. Plecostomus can usually handle water about 60 degrees but shallow water ponds can have drastic water temperature changes in a 24 hr period that could impact those fish that are sensitive. For the most part Koi and some of your goldfish will love the winter months here.
Enjoy
Enjoy