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Koi are a particularly hardy fish and can adapt to living in many environments including tanks, aquariums and indoor ponds. Much like outdoor koi ponds, indoor koi tanks have some special considerations to take into account. Optimal Number of Koi. A major consideration is the number of fish you should keep inside.


Koi are cold water pond fish, descended from carp. Koi owners may need to bring their prized koi indoors during the winter to prevent death in frozen pond water. Keep koi in large aquariums for a few months at a time. If you live in an apartments, you may have to keep koi in aquariums for their ...


Housing fish indoors is a great way to ensure your fishes safety as well as being able to grow and enjoy them on a year round basis Of course, because koi are so big, a large tank is required to house the fish properly. These tanks can weigh a lot, so need to be built properly if they are to hold water in the long run


To determine what, in my opinion, is the maximum safe fish load for your tank or indoor pond, divide the total gallonage by 100. The result is the number of 12-inch koi that can be raised in that volume of water. For example, if you are using a 125-gallon tank, then the safe fish load would be 1.25 12-inch koi.


A heater is not necessary for these cold-water fish, but purchase the best filter you can. A good pump will keep the water aerated and properly oxygenated. Make sure the top of your aquarium or indoor holding tank has a screen top or netting cover, as koi like to jump out of the water.


Koi stay inside when there's a problem with the pond, winter is harsh, one is sick, a new arrival is undergoing quarantine or when fish are small enough to live long-term inside an aquarium or indoors pond. The latter is also a good choice for koi-lovers who live in an area that prohibits the hobby outdoors.


As a koi owner, it is crucial that you keep your koi's tank or pond at a reasonable temperature. Koi rely on the water temperature to assist with their digestive process and cannot digest food if the water gets too cold. Failure to keep your koi's water within the acceptable temperature range can lead to the death of your fish.


Outdoor koi ponds are not only the most aesthetically pleasing way to house your fish, but their benefits greatly outnumber other options. However, with careful precaution, koi fish aquariums can be a possibility for temporarily housing baby koi. Here’s some tips on keeping koi in an aquarium!


Put the aquarium in a quiet area out of direct sunlight and drafts. Cover the aquarium with a hood to reduce evaporation and splashing and to keep fish from leaping out. To transfer new koi to the aquarium, float them in the water inside their bag for about 10 minutes so they can acclimate to the new water temperature.