Pond fish survive winter by slowing down their metabolism, seeking out warmer water at the bottom of the pond, and relying on stored fat for energy. They may also hibernate in mud or under ice to conserve energy.
No
If the water is likely to freeze, then I would definitely bring it indoors.
Most likely.
they crawl in they can survive out of water for a day i think
A swordtail is a tropical fish and a goldfish is not. The swordtail would need a higher temp. than the goldfish. Depending on where you live it probably wouldn't survive the winter.
They cant break the ice you retard
no they cant
carp or koi can survive freezing over winter. But as for tropical fish most hardy central american cichlids do well over summer, as well as danios, barbs, white clouds, and especially livebearers.
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.
Yellow-bellied sliders can tolerate some cold weather, but their survival in an outdoor Koi pond during South Carolina's winter depends on the temperature and pond depth. If the pond is deep enough to prevent it from freezing, the sliders may survive, as they can enter a state of brumation. However, prolonged exposure to freezing temperatures can be harmful or fatal. It's essential to monitor the conditions and ensure they have a suitable environment to hibernate safely.
Very calm and non-territorial fish. I would suggest gold fish called Comets. They are inexpensive since some are used as feeder fish. They come in a variety of colors so some may think that you have more Koi in your pond and since they are gold fish, they can live in cold water and if your pond has enough room, they will survive cold snaps during the winter.
One is more likely to find lots of frog eggs in a pond with a small amount of fish because frog eggs tend to be eaten by fish sometimes. So less fish equals more eggs that survive.