If you are asking if they can live in a cold outdoor pond than the answer is no. They come from a tropical climate in South America and are not meant for water below about 72' Fahrenheit (22.22' Celsius).
Plecostomous are a tropical species and will not survive temperatures below 65F for long. If you live in an area where the prevailing temperatures get below 70F, the fish will not survive.
It can if the temperature doesn't get below about 72 degrees Fahrenheit which is very unlikely. So no they can not.
Pleco's are tropical fish, so if your pond has a sub-tropical temperature, the pleco will not survive in the pond for very long.
It isn't really recommended because it is a tropical fish but can live with koi if it doesn't get too cold.
In South America, where they come from, they all live outside. They would only be able to live outside where the temperature range is always warmer. I currently have one in my pond which he loves. Since he is a tropical fish I will have to bring him back inside when the weather turns cooler and the water temperature become colder.
An outdoor pond is appropriate for a terrapin because it is a suitable habitat for them. Terrapins are best suited for shallow ponds that are less then three feet deep.
what is the climate on a pond
I can get an outdoor pond by digging on in my back yard. FIrst, dig a large hole, the shape of your pool and its depth. NExt, fill he hole with cement so it can take the shape of your pool. FInally, add water and you have yourself an outdoor pool.
Most likely.
There are many stores that sell outdoor pond cleaning items. One place to look for these items would be your local pet store, or maybe even a pool store.
No they will not survive the winter in most any place in the US if they are outside. They prefer the water to be from about 72-82 degrees Fahrenheit.
The temperature can be 50 to 60 degrees. water temperature
A pond pump helps circulate the water properly. If it is not used, the water would sit still and get slimy. If there are fish in the pond it would help keep the water clean.