Generally, how old can goldfish be to reproduce, how big can goldfish be to reproduce, and what is t

Goldfish begin to shake seeds at 4-5 months, but generally do not come out of the fish, 1 year old, it's about the same. The breeding method must be correct.

The experience I have summarized over the years is relatively easy to understand. Raising goldfish is first of all from the selection of goldfish, goldfish are divided into four categories: golden carp species, literary species, dragon species, and egg species. Try not to polyculture to avoid breeding fish with poor ornamental properties.

Goldfish also belong to cold-water fish, the so-called cold-water fish does not mean that it can only be raised in cold water, but that its water temperature adaptation surface is relatively large, it can survive in any water temperature of 0-38 degrees Celsius, and it will not think that the tropical fish adaptation surface is so small. Goldfish prefer hard water, and the time of being trapped in the water does not need to be too long, about three days is enough. But be sure to keep the goldfish water clear.

Change the water without changing about 5 1 on the day, not particularly turbid do not need to change all, pay attention to the temperature of the new water and the old water is not more than two degrees Celsius, so as not to get sick fish. The density of goldfish should not be too large (a pair of round fish tanks with a diameter of 20 cm is appropriate, and so on), do not feed too much, it is advisable to feed once every two days, feed to about eight minutes, feed feed or quick-frozen fish food, although the fish like to eat live food, it contains a large number of parasites, and the fish are susceptible to diseases. Do not raise goldfish must add salt (do not add edible salt, edible salt contains iodine, iodine is equal to chronic poison for fish) one percent of the proportion.

Try not to put the goldfish on the windowsill Goldfish is a medium-light fish, and a little sunlight is fine. Try not to let the water temperature get too high, the higher the water temperature, the more oxygen the fish will consume.

It can reproduce at about 10 cm.

Goldfish can reproduce after growing for about a year under normal conditions. Some fast-growing goldfish can reproduce after 7-8 months of growth. Their breeding season is generally at the turn of spring and summer, and April and June are the best breeding periods.

If both females and males are healthy, the number of eggs produced at one time can reach more than 5,000. The number of such fish breeding at one time depends on the species of fish, the growth of the individual, and the surrounding environment at that time. <

Goldfish reach sexual maturity and are ready to reproduce when they are about a year old. Some fast-growing goldfish are ready to breed when they are 7-8 months old. If the water temperature is properly warmed in winter, it is possible for them to enter the breeding period earlier.

Normally, this fish does not lay only one egg per breeding period, but 3-4 eggs per season.

The breeding period of goldfish is generally in the transition between spring and summer, probably between March and June, and April to June is the best breeding period for goldfish, when goldfish will spawn about once a week or two. The eggs hatch 3-7 days after fertilization. The optimal water temperature during the breeding season for this fish is between 18 and 25.

Normal goldfish can spawn up to 5,000 eggs at a time. However, the number of goldfish reproduced is mostly different. The number of eggs laid varies from breed to breed and from individual to individual.

The number of spawns laid by the same fish several times during the breeding period is also different. Healthy fish can lay up to 1,000 eggs at a time. This fish is normally the most numerous during the second spawning during the breeding season, and the first and last are the least.

Weak, old and malnourished fish will spawn fewer eggs. Sexually mature females usually lay eggs 2 or 3 times, and even as many as 4 or 6 times. There is a period of time between each spawn, which is about 10 days.

There are two breeding methods for goldfish: natural reproduction and artificial reproduction.

There are two breeding methods of goldfish: natural reproduction and artificial reproduction, and natural reproduction is more used in families. Generally, the number of eggs of one-year-old goldfish weighing 8 9 grams and body length of 7 8 cm is only 1000 1500 eggs; The one-year-old goldfish with a body length of 10 to 12 cm can carry up to 5,000 10,000 eggs.

.Goldfish male and female identification:

Before sexual maturity, the difference between the female and male traits of goldfish is very small, and in the breeding season, the male and female traits are gradually obvious, and there is a milky white "star chasing" on the first fin and gill cover of the male pelvic fin, and the hand touch has a rough feeling, and the reproductive hole is small and narrow, slightly concave; The female touches the above parts with her hands and feels soft, without "chasing stars", and the reproductive pores are slightly protruding outward.

Spawning pond or tank to 1 2 square meters as well, water depth 20 25 cm, can put 6 8 pairs of broodstock, family goldfish can also use enamel pots or plastic pots, put 1 2 pairs of broodstock. Goldfish eggs are sticky eggs, and there must be attachments when spawning, commonly known as "fish nests", so that the eggs adhere to them and are easy to hatch. Families can use goldfish algae, black algae, etc., and each pair of broodstock can be put 1 2 plants.