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What Is the Grass Carp Stone? A Detailed Guide to Removal, Polishing, Care and Price
You are probably quite familiar with the grass carp, but you may never have heard that a grass carp stone is hidden in its head. So what is the grass carp stone? How do you remove it? How do you polish and care for it? The grass carp stone, also known as the black carp stone, fish scare stone, fish essence stone and fish pillow stone, is
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At what size do crucian carp spawn, and how many days does it take for the eggs to hatch into fry?
Crucian carp, commonly known as crucian, with local names such as jiguazi, yuejizai and tuji, can produce many new varieties through artificial breeding and selective breeding. So at what size do crucian carp spawn? How many days does it take for the eggs to hatch into fry? According to farmer Mr. Zeng, the gonads of crucian carp mature earlier than those of other fish; fish in their second year can spawn, and they continue to grow in size while spawning. One-year-old crucian carp can already spawn. Moreover, the spawning period is long, lasting from spring all the way to autumn, and the number of eggs laid is large; the eggs are laid on aquatic plants or other objects in shallow water. The strong reproductive capacity of crucian carp is an important reason why it is widely distributed and abundant. There is another point: crucian carp still forage for food during the spawning period, which is different from other fish. <p style="text-align: center;"></p> <p style="text-indent:2em;"><span style="color:#FF0000">How many days does it take for the eggs to hatch into fry?</span></p> <p style="text-indent:2em;">Generally, it takes 3—7 days from the laying and fertilization of the eggs to the hatching of the fry. If the average water temperature is 15—20°C, the hatching time is 5—7 days; if the average water temperature is 20°C, the fry can hatch in 4—5 days; if the average water temperature is 20—25°C, only 2—3 days are needed. In short, the lower the water temperature, the longer the hatching time.</p> <p style="text-align: center;"></p> <p style="text-indent:2em;"><span style="color:#FF0000">Crucian carp farming techniques</span></p> <p style="text-indent:2em;">1. Pond conditions</p> <p style="text-indent:2em;">Crucian carp has the habits of liking to gather in groups, burrowing into mud, and leaping upstream to escape. The pond area for mainly farming crucian carp should not be too large; generally about 2 mu is suitable, and it should not exceed 4 mu. The pond bottom should be relatively hard, generally with a mud thickness within 10 cm; when it exceeds 10 cm, the mud must be cleared to facilitate the catching (catching) of crucian carp. The pond embankment should be solid and not leak water, and sturdy and reliable fish-blocking screens should be installed at the water inlet and outlet. The fish-blocking screen should be 50 cm higher than the highest water level of the pond.</p> <p style="text-indent:2em;">2. Variety selection</p> <p style="text-indent:2em;">At present, there are many crucian carp varieties sold on the market, and it is inevitable that good and poor ones are mixed. Practice has proved that allogynogenetic silver crucian carp and high-back allogynogenetic silver crucian carp (abbreviated as high-back crucian carp) are suitable for main farming, and their growth speed is 2 times and 3 times faster than ordinary crucian carp respectively. Allogynogenetic silver crucian carp and high-back crucian carp are similar. The differences between allogynogenetic silver crucian carp and ordinary crucian carp are: allogynogenetic silver crucian carp has 31-32 scales along the lateral line, while ordinary crucian carp has 28-29; allogynogenetic silver crucian carp and high-back crucian carp have the same number of lateral line scales, but high-back crucian carp has a short head, high back, thick body, and round abdomen.</p> <p style="text-indent:2em;">3. Stocking density</p> <p style="text-indent:2em;">From the perspective of farming economic benefits, if the stocking number exceeds 2000 fish/mu, although a higher yield can be obtained, the individual commercial fish raised are small, the selling price is low, and the benefit is not ideal; if the stocking number is less than 1000 fish/mu, although the individual commercial fish are larger, the total yield is not high and the sales income is low. Stocking 1400 fingerlings of 30 grams each per mu or 1200 fingerlings of 50 grams each per mu, with an appropriate amount of silver carp, bighead carp and summer grass carp, with the total number of mixed fish not exceeding 600, can achieve a net yield of more than 500 kg of crucian carp and about 200 kg of other fish, giving an ideal effect.</p> <p style="text-indent:2em;">4. Water quality management</p> <p style="text-indent:2em;">The calcium and phosphorus content in the body of crucian carp is more than 2 times that of other fish, so the water is required to be rich in calcium and phosphorus to meet the physiological needs of crucian carp. Apply quicklime solution once about every 20 days, with 60 kg per mu each time; apply superphosphate once every 15 days, with 15-20 kg per mu each time. Superphosphate can only be applied 3-5 days after applying quicklime, to prevent the water from being too alkaline and reducing the effect of phosphate fertilizer.</p>
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How big do koi carp need to be to spawn, and how long does it take to hatch out fry?
Koi carp is a high-end ornamental fish popular around the world today, praised as a living gem in the water and a work of art that can swim. So how big do koi carp need to be to spawn? How long does it take to hatch out fry? According to Mr. Wu, a large-scale breeder, koi carp are oviparous animals; male koi mature at 2 years of age, and female koi mature at 3 years of age. Once the gonads are mature, they can begin to spawn and reproduce; afterward, the gonads mature periodically once a year, allowing one round of reproduction per year.
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What grass do grass carp generally like to eat, and how many jin can they gain in a year?
Grass carp is a typical herbivorous fish. For grass carp weighing more than 2.5 kg, each fish can eat 120-180 g of grass per day. So, what grass do grass carp generally like to eat? How many jin can they gain in a year? What feeding methods are there? Next, let us learn about it together.
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How much do black carp fry cost now, how big can they grow in a year, and what do they eat?
Black carp is a fish with a bluish color, mainly distributed in the plains south of the Yangtze River in China, and is one of the "four major Chinese carps" of freshwater aquaculture in China. So how much do its fry cost? How big can they grow in a year? What do they eat? From the Wuhan aquatic products market we learned
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Gold Crucian Carp: A Detailed Guide to Suitable Water Temperature, Food, and Water Change Frequency
The gold crucian carp, also known as the grass goldfish, grows relatively fast when food is plentiful, reaching a body weight of over 500 grams and a body length of about 30 cm at three years of age, with a maximum length of up to 50 cm. So, what water temperature does the gold crucian carp adapt to? What food does it eat? How often should the water be changed? 1. Gold Crucian
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How much does a golden koi cost? A detailed guide to what it eats and how to choose one
The golden koi has only a single golden color over its whole body, with neatly arranged scales, and its entire body gives off a bright, crystal-like golden glow. When the water temperature is higher in summer, the golden color turns dark golden yellow. So, how much does a golden koi cost? What does it eat
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Ficus microcarpa Growing Environment, Potted Cultivation Precautions, and the Medicinal Benefits of Its Aerial Roots
Ficus microcarpa, also known as small-leaved fig, evergreen tree, etc., reaches 15-25 m in height, with a flowering period from May to June. Here we take a look at where Ficus microcarpa grows, what precautions are needed for potted cultivation, and what medicinal benefits its aerial roots have. 1. Where does Ficus microcarpa grow? Ficus microcarpa's
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How many jin can a carp gain in a year, and what feed should be given for high yield?
Carp, with the Chinese aliases li guaizi, lizi, maozi, and red fish. It usually inhabits the bottom layer of rivers, lakes, reservoirs, and ponds where aquatic plants grow densely, feeding mainly on benthic animals. So how many jin can it usually gain in one year? What feed should be given? How should it be raised to
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Bighead Carp Price Per Jin, Stocking Density Per Mu, and Farming Techniques
Bighead carp, also called bighead carp, spotted silver carp, fathead carp, black silver carp, yellow silver carp, pine fish, yong fish, bighead silver carp, and whale fish, is one of China's famous "Four Major Domestic Fish." So how much does it cost per jin? How much can it grow in a year? How many to stock per mu? What are the farming techniques? From
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