sir/madam,
Vinegar is a mild acid but their antimicrobial action only referred from higher acidity (more than 6%). so vinegar especially organic nature is not confirm to clean the pond efffectively.
N.Muthukkannan
Research scholar
Pollachi.
it can kill some fish or all of your fish if not treated right away
Koi fish Koi fish
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!
Koi fish can live in almost any country. Koi are thought to be originally from Japan. Many people have outdoor fish ponds in which Koi are the dominant fish.
a fish, a koi carp
If the Koi is large enough it may well eat a goldfish fry but Goldfish and Koi are not fighting type fish so they do not normally bite one another.
because it is fish
Nope they sometimes eat there eggs
Koi are a type of specially bred carp.
Koi fish usually have two eyes.
The Japanese for Koi is nishikigoi.
The sex of koi fish cannot be determined unless a)you dissect the koi or b)you witness the breeding.