CATDOLL : CATDOLL: How long does it take for black carp to hatch after laying eggs? Do they have strong reproductive capacity?

1. How long does it take for black fish to hatch after laying eggs? Do they have strong reproductive capacity?

After snakehead fish lays eggs, they usually hatch in about 3-7 days. The water temperature will have a certain impact on the hatching time. If the average water temperature is 15-20°C, the eggs usually hatch in 5-7 days. If the average water temperature is around 20°C, the eggs usually hatch in 4-5 days. If the water temperature is 20-25°C, the eggs usually hatch in 2-3 days. After laying eggs, snakehead fish will guard near the ovaries to prevent other fish from harming the eggs.

1. How long does it take for black fish to hatch after laying eggs?

1. After the snakehead carp lays eggs, the eggs usually hatch after about 3-7 days. The water temperature will have a certain impact on the hatching time. The lower the water temperature, the longer it takes to hatch.

2. If the average water temperature is 15-20°C, the eggs will generally take 5-7 days to hatch. If the average water temperature is around 20°C, the eggs will generally hatch in 4-5 days. If the water temperature is 20-25°C, the eggs will generally hatch in 2-3 days.

3. Before laying eggs, snakehead fish will pick up water plants to build nests. The diameter of the ovary is usually about 50 cm and floats on the water surface. After the ovary is built, the male and female fish will begin to mate, and then the female fish will lay eggs on the nest.

4. After the snakehead fish lays eggs, the male and female parents will lurk near the ovaries to protect the young eggs and prevent other fish from approaching. When the hatched fry grows to 4-5 cm, the parents will stop protecting the young and leave the nest.

2. Does black carp have strong reproductive capacity?

1. Snakehead carp has a strong reproductive capacity. A snakehead carp with a body length of 50 cm can carry about 35,000 eggs. A snakehead carp with a body length of 40 cm can carry about 20,000 eggs. A snakehead carp with a body length of 30 cm can carry about 10,000 eggs.

2. Snakehead carp generally reaches sexual maturity after two winters. At this time, the individual can usually reach more than 30 cm and weigh more than 0.5 kg. Its breeding time varies from place to place. It is generally April to May in South China and May to July in the north.

3. The newly hatched fry is about 4.1 mm long, with melanocytes all over its body, and often lies on the water surface. The oil ball will cause the front end of its body to swell significantly, similar to a tadpole.

4. If you are breeding snakehead carp, you can select mature and strong male and female snakehead carp in a 1:1 ratio as broodstock.

answer

After snakehead fish lays eggs, they usually hatch in about 3-7 days. The water temperature will have a certain impact on the hatching time. If the average water temperature is 15-20°C, the eggs usually hatch in 5-7 days. If the average water temperature is around 20°C, the eggs usually hatch in 4-5 days. If the water temperature is 20-25°C, the eggs usually hatch in 2-3 days. After laying eggs, snakehead fish will guard near the ovaries to prevent other fish from harming the eggs.

1. How long does it take for black fish to hatch after laying eggs?

1. After the snakehead carp lays eggs, the eggs usually hatch after about 3-7 days. The water temperature will have a certain impact on the hatching time. The lower the water temperature, the longer it takes to hatch.

2. If the average water temperature is 15-20°C, the eggs will generally take 5-7 days to hatch. If the average water temperature is around 20°C, the eggs will generally hatch in 4-5 days. If the water temperature is 20-25°C, the eggs will generally hatch in 2-3 days.

3. Before laying eggs, snakehead fish will pick up water plants to build nests. The diameter of the ovary is usually about 50 cm and floats on the water surface. After the ovary is built, the male and female fish will begin to mate, and then the female fish will lay eggs on the nest.

4. After the snakehead fish lays eggs, the male and female parents will lurk near the ovaries to protect the young eggs and prevent other fish from approaching. When the hatched fry grows to 4-5 cm, the parents will stop protecting the young and leave the nest.

2. Does black carp have strong reproductive capacity?

1. Snakehead carp has a strong reproductive capacity. A snakehead carp with a body length of 50 cm usually carries about 35,000 eggs. A snakehead carp with a body length of 40 cm usually carries about 20,000 eggs. A snakehead carp with a body length of 30 cm usually carries about 10,000 eggs.

2. Snakehead carp generally reaches sexual maturity after reaching two winters of age. At this time, the individual can usually reach more than 30 cm in length and weigh more than 0.5 kg. Its breeding time varies from place to place. It is generally April to May in South China and May to July in the north.

3. The newly hatched fry is about 4.1 mm long, with melanocytes all over its body, and often lies on the water surface. The oil ball will cause the front end of its body to swell significantly, similar to a tadpole.

4. If you are breeding snakehead carp, you can select mature and strong male and female snakehead carp in a 1:1 ratio as broodstock.

2. How many times can snakehead fish reproduce in a year?

Reproduce 2-3 times a year

3. Artificial breeding of snakehead fish: When does snakehead fish breed?

(1) Feeding: In order to cultivate the broodstock as quickly as possible in a short period of time, the feed should be nutritious and should be fed with fresh and live feed that the black carp likes to eat, such as marine and freshwater wild fish, shrimp, shrimps, and frogs. When these live baits are insufficient, you can also feed snails, crickets, silkworm pupae, and animal feed such as the leftovers of slaughtered livestock and poultry. When feeding "dead bait", you should adopt the method of taming the bait, using the sound of the clap as a signal to make the fish form a conditioned reflex and float up to the surface to grab food. When feeding, you should adhere to the principles of "four observations" and "four determinations" to ensure that the broodstock eat well and do not leave any leftover bait.

The "four observations" of Xiayan are: look at the season, the distribution of the amount of food eaten by fish during the growth period of a year is "more in the middle, less at both ends". Look at the water quality, if the water quality is thin, you can feed more, and if the water quality is too fat and aging, you should feed less. Look at the weather, feed more on sunny days, and feed less or not on rainy, sultry or rainy days. Look at the fish's eating situation, if the fish eat normally, the scramble for food for a long time, and there is no surplus on the bait table, you can feed more; if the eating is abnormal, the fish will not scramble for food in a short time, and there will be surplus on the bait table, you can feed less. The "four determinations" are: determine the quality, the bait should be fresh, not corrupt, and soaked in 2% to 3% salt water solution for 8 to 10 minutes before feeding. Quantitative, the amount of bait fed accounts for 5% to 8% of the total weight of the fish body, the upper limit is used for small fish, and the lower limit is used for large fish. Positioning, each time you throw bait, you must throw it above the bait table. Before throwing, use the sound of clapping as a "signal" to make the snakehead form a conditioned reflex and float up to the feeding table to grab food. Increase the feeding amount and bait utilization rate. Timing, that is, regular feeding, feeding once at 9 am and 5 pm every day. A certain number of tilapia, turtle stripes, fish, wheat ear fish, etc. can also be raised in a single pond, and the young fish fry that are allowed to reproduce by themselves can be used as fresh bait for snakehead broodstock.

(2) Regulating water quality: Regulating water quality is an important measure for broodstock breeding. The quality of water has an important impact on the gonadal development of broodstock. Juice water can promote the development of broodstock.

The specific method is: after entering April, the water temperature gradually rises, the amount of feeding increases, and the fish excrement also increases, the water quality becomes fat and aged, and water must be frequently injected. Generally, water is injected once every 7 to 10 days, and the depth of each injection is 20 to 30 cm. In order to control the excessive fatness of the water quality, 100 to 200 large-sized (250 grams/tail) crucian carp and crab species can be placed on the water surface every 647 meters in the single-culture breeding pond, or some water hyacinths, water peanuts, water lilies, etc. can be placed on one side or corner of the pond to play a role in biological regulation of water quality.

(3) Fish disease prevention and control: Disease prevention is an important measure in broodstock management. Once broodstock become sick, it will affect artificial breeding.