50-100 gallons
That depends on if you fit the fish to the tank, or fit the tank to the fish. Koi will grow to the size of the tank. The bigger the tank, the bigger they will grow. You can put about 6 4 inch Koi in a 30 gallon tank. And of course, the bigger the fish, you need to adjust your tank size. The koi will quickly outgrow your tank! They will be like prisoners in a cell, not able to move around. Probably enough to survive if you keep up the waterchanges, but not enough to thrive. Koi belong in a pond.
Yes pond comets and other pond goldfish get along with koi, however koi can get over 24 inches long when a comet typically doesn't grow more than 12 inches- that's quite a considerable difference in size (which is why its often best to keep koi with other koi and goldfish with other goldfish).
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.
Absolutely not. One fancy goldfish requires 20 gallons on it's own, and a singletail goldfish requires 35 to 40 gallons alone with the exception of Koi which need a large pond.
No, a Koi is a carp. It comes from the Japanese word Nishikigoi which literally means 'coloured carp'.
I buy baby goldfish for my turtles. The ones that they don't catch in about an hour or so, somehow they become friends and never bother them. My leftover goldfish are now the size of Koi.
I don't know except do not put goldfish in the same tank as anything else the other thing will die. I know from experience. :*(
koi fish would normally eat goldfish food try tetra fin goldfish flakes they are made for goldfish and koi
if it is lying down flat it might be sick
I think it's KOI I have a friend who's is a really big koi lover. He is very adamant about the fact that koi are not goldfish!
Koi is a type of fish. Just don't put koi in the pond and it will not be a koi pond.
Goldfish do not have hair; instead, they have scales that cover their bodies which can vary in type and colour depending on which type of goldfish you have.