it can kill fish in the pond or it can kil people
yes, because of the smell
No. Pool chemicals will kill the fish. Also water balance PH, and ALK levels will not support fish life. www.nationalautoinc.com
well there could be many reasons like the pH level could be messed up or the type of fish cannot live in ponds or you have had a fish dat has been inside for a wile and u put it in a pond shock will kill it or if you are just putting the fish in the water without putting it in a bag to let the temperature ajust or it could be nitrate or murky water that is hard for them to breath in or a disease goldfish are the best for ponds
It is not recommended to add chlorine directly to a pond, as it can harm fish, plants, and other aquatic life. If you need to treat a pond for algae or bacteria, use pond-specific products that are safe for the environment. It is important to follow manufacturer instructions and consider the impact on the ecosystem.
Because it smelt bad.
Better than what? I don't know exactly what you mean or why you ask, but bettas (assuming that's what you mean by fighting fish) need clean, chlorine-free water that is above 76° and filtered and at least 5 gallons to swim around in. You can't keep them in an outdoor pond and water taken from a pond is likely to have diseases that will kill them.
Chlorine, but you need to aerate it and keep water moving or problem will be persistant
You can definitely install a pond pump in a Koi Fish Pond. http://www.coloradokoi.com/ has a lot of valuable information about caring for your Koi Fish Pond!
Bleach.
Yes and any fish that are in it also,
absolutely not! goldfishes cant live in chlorinated water. you need a water conditioner to remove the chlorine and ammonia from the water