1. Generally, koi in small aquariums can only grow to two or three inches due to the restricted activities of koi.
2. For those who breed koi, if they want koi to grow, they should raise koi in a large aquarium or small fish pond and feed them reasonably. Generally speaking, when you choose to breed koi fish in an aquarium or fish pond, the length of the aquarium or pond should be at least 4 times the length of the fish, the width should be 1.5 times the length of the fish; the height of the water should be twice the length of the fish.
3. How big do koi carp usually get? During the life of a koi carp, the koi carp grows very quickly after hatching. Among them, the male koi carp grows very quickly before the age of 2. of age, and female koi carp grow very quickly after the age of 2 years. The average length is 1 cm after lhatching, 2 cm after 40 days, 3 cm at 60 days and 8 cm at 80 days later, the 1st year koi will measure 10 to 20 cm long, the 2nd year one; old koi will be 24 to 30 cm long and 3 year old koi will be 24 to 30 cm long. The length is 37 to 40 cm, the 5 year old koi will measure 45 to 50 cm long, the 10 year old. -old koi are between 55 and 70 cm long and koi over 10 years old can reach 1 to 1.5 meters.
4. As a high-end ornamental fish popular in the world today, koi carp are known as "living gems in the water" and "swimming works of art". There are also many enthusiasts who are willing to try breeding koi, but as enthusiasts who are raising koi for the first time, what size aquarium should they use for breeding koi is a question that they must understand.
5. Pay attention to the size of the aquarium mentioned above. If youraise larger koi, you can only raise one or two. If you are a true koi carp or Feng Shui fish enthusiast, it is recommended to personalize your aquarium rather than using the small aquariums sold in supermarkets. So, what size aquarium should you use to raise koi? The recommended volume is more than 1.5 cubic meters, which is not enough to raise too much! 3 koi over 40 centimeters and 6 small koi of 10 centimeters. The size of the aquarium is 2.8 × 0.8 × 1. This is a relatively populated breeding density. The growth rate of koi is relatively slow, so as for how. To breed koi fish in an aquarium, you must first turn on the filter 24 hours a day. The filter also has the function of increasing oxygen. Once the power is cut off, he must avoid death from lack of oxygen.