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Which Crucian Carp Fry Variety Is Best? Recommended Superior Varieties
Crucian carp has tender flesh and a delicious taste, and is a very common edible fish. Crucian carp has a very long history of being eaten, and so does its farming, and its producing areas are now widely distributed across many provinces and regions in China. Today the crucian carp farming industry is developing very rapid
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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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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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How much do crucian carp fry cost? A detailed guide to high-quality, high-yield farming methods
Crucian carp grows slowly and reaches sexual maturity in about two years, but its reproductive capacity is very strong, and it can reproduce in both flowing and still water, making it suitable for large-scale farming. So how much do crucian carp fry cost? How should they be farmed for high quality and high yield? 1. How much do crucian carp fry cost? Crucian carp fry
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Do Crucian Carp Actually Eat Crayfish Fry?
Crucian carp eat crayfish fry. Crucian carp is an omnivorous bottom-dwelling creature, and it will eat crayfish fry and crayfish feed, so it is best not to polyculture crucian carp fry and crayfish fry together. However, if the crucian carp are somewhat larger, they can be polycultured with a small number of crayfish. Points to note during crucian carp farming
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How much do grass carp fry cost in 2019, and is it profitable to raise grass carp?
Black carp, grass carp, silver carp and bighead carp are the well-known "four major Chinese carps," fish that people eat regularly and that have relatively high nutritional and economic value. Many farmers choose to raise grass carp. How much do grass carp fry cost in 2019? Is it profitable to raise grass carp?
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How to Raise Grass Carp Fry? A Detailed Guide to the Key Breeding Techniques
Fish farming is now a fairly popular profession, and fry breeding is one type of it, so how do you raise grass carp fry? 1. Choosing and cleaning the pond. The fry pond should be chosen with a fairly firm surrounding area, and next, good water retention. The fry pond should be chosen in a spot with sunlight
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How to prevent and treat white head and white mouth disease in farmed grass carp
In home fish summer fry nursery ponds, the skin pigment from the tip of the snout to the eyeball of diseased fish fades to a milky white color, the lips appear swollen, and opening and closing become impaired, thereby causing difficulty in breathing. White head and white mouth disease is one of the serious diseases harming summer fry fish species (grass carp, black carp, silver carp, common carp, etc.)
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Key Technical Points for Fingerling Rearing in Carp Farming
Summer fry fingerlings must be selected from those that are disease-free and uninjured, robust in constitution, lively in movement, and uniform in size. Fingerling rearing generally adopts mixed culture of 2 to 3 species of fish, but with one species as the main one. In a pond with carp as the main cultured fish, stock 6,000 to 8,000 summer fry per 667 sq m, combined
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