Quail FishKoi fish are also known as the Japanese carp and can grow quite large. It is 100 gallons if you intend to breed koi in an aquarium, while a pond requires a check with local authorities to ensure that the size and depth will be adequate. These fish are community creatures, and if you want to keep them in an aquarium setting, they will need to be kept with like types of fish that do not irritate them or leave the pond area.
Koi grow quickly; some may even double their size within several months. If your koi is too small for the tank, you can transfer it to a larger tank. Make sure the new tank has enough space for your koi to grow, as well as adequate filtration.
Koi fish can grow quite large and may need a lot of space for their long, graceful fins. If you intend to breed koi fish in an aquarium, the minimum size of the tank is one hundred gallons. While smaller tanks can be used, they will not allow for enough space for breeding purposes. Aside from the tank itself, you will need gravel or another substrate at the bottom, a filtration system (to maintain water quality), and a cover.
If your koi fish outgrow their aquarium, you may make use of an outdoor pond instead. If this is the case, make sure to check with local authorities to ensure that the size and depth of the body of water will not pose a danger. You can also find pre-made ponds on some websites, but be sure to review their reviews first so you know exactly what you're getting yourself into.
Koi fish require different types of food depending on their age and stage in life. For example, newly-born fish are fed infusoria. If you have a pond, you can use duckweed as well. As koi fish mature, they should be fed brine shrimp and blood worms. They also need to be given vegetation in the form of lettuce or water spinach.
When introducing new fish into an aquarium, place them in one section and wait until they adjust before putting them in with the rest of your fish. Koi fish can be territorial and may behave aggressively if placed with other fish immediately.
When caring for koi fish, you should regularly check their behavior as well as their physical condition. If you notice something unusual, contact a local veterinarian to treat your koi. In the meantime, you can give your fish a temporary home in a small aquarium until they are better.