CATDOLL : CATDOLL: I have seven or eight koi fish now. How can I make them breed some small fry?

1. I have seven or eight koi now. How can I make them breed some small fry?

No~~~ Generally speaking, a relatively large bottom of water is needed for reproduction, because the fertilization method of fish is external fertilization, that is, after the female fish lays eggs in the water, the male fish releases sperm on the eggs to form fertilized eggs. Generally, domestic fish tanks will not ovulate.

2. How to breed koi

Koi is a very famous ornamental fish. Now more and more people are raising koi, and the range of raising koi is getting wider and wider. At present, the reproduction of koi has increased, and it belongs to a hybrid strain, and the separation of its offspring is also very complicated. For breeders, if they want to breed high-quality koi, they must master the relevant knowledge and technology.

First of all, the broodstock should be over 3 years old, over 60 cm long, pure bloodline, good color, and very strong. Studies have found that male koi can mature at 1 year old, while female koi can mature at 1.5 years old. However, the best breeding time should be over 3 years old, otherwise the quality of the koi offspring cannot be guaranteed.

Secondly, after selecting high-quality broodstock, it is necessary to strengthen the cultivation, and the cultivation time should be in autumn. At this time, the water temperature is best maintained at around 25 degrees, and the appetite of koi reaches the strongest. The breeder needs to choose protein-rich feed for feeding. Feed at a ratio of 8% of body weight, two to three times a day. The selected feed can be green fodder such as cabbage, spinach, duckweed, rice, glutinous rice starch and nutritious food for feeding.

Finally, the best breeding season for koi is in spring. Koi can breed when the water temperature reaches between 18-35 degrees. The most suitable water temperature for koi breeding is between 22-30 degrees. Therefore, breeders should build a good environment for koi to meet the needs of koi breeding and promote its smooth reproduction of offspring.

Breeding koi requires a lot of experience and practical experience. To ensure the quality of koi offspring, it is far from enough to rely on some professional theoretical knowledge. It is necessary to accumulate and summarize experience in the process of actual operation to ensure the quality of koi offspring.

3. How to breed koi in an aquarium

No, koi reproduce by flicking their tails, so they need a large area of ​​water.

Koi fish are omnivorous. Koi are gentle in nature, like to swim in groups, are easy to raise, and have strong adaptability to water temperature. They can live in a water temperature environment of 5-30℃, and the water temperature for growth is 21-27℃.

In addition to the water temperature and the abundance of bait that can affect the growth rate of koi, there are also great differences in the growth of male and female fish. The age of koi is determined by the number of annual rings on the scales, just like most fish.

The breeding of koi can be divided into the following points:

1. Breeding space: Koi will adjust their body shape according to the environment, so they can be raised in an aquarium or a fish pond. Do not put too many decorations in the aquarium to avoid hurting the fish.

2. Water temperature: The water temperature range for Koi is 2℃-30℃, and the most suitable water temperature is 20℃-25℃. In this temperature of water, Koi swim actively, have a strong appetite, are strong, and have bright colors. Because they are raised in an aquarium, the temperature can be controlled within the range of 20℃-25℃ all year round, so that Koi can have a comfortable environment and grow rapidly.

3. Bait: Special Koi feed. One kilogram of Koi should eat 30 grams of fish feed per day, divided into 3-4 feedings.