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How to Transplant Large Icefish? Detailed Technical Explanation for Hinggan League, Inner Mongolia
Hangali Reservoir is located in Horqin Right Wing Middle Banner in the northeastern part of Inner Mongolia Autonomous Region, and is a medium-sized lateral reservoir on the Huolin River. In January 1996, 780,000 fertilized eggs of large icefish were transplanted from Luhun Reservoir in Henan Province and placed under the ice for natural hatching, and the hatching results were very good. A growth inspection that year found that the transplanted large icefish grew and developed well, reached sexual maturity in late December, and began natural reproduction, achieving a first-class introduction effect. In January 1997, in order to consolidate the number of the supplementary population of large icefish,
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A Detailed Guide to the Home-Style Method for Steamed Fish with Fragrant Bamboo and Rice Flour
Ingredients: 1 live fish, about 1000 g; 100 g cooked five-spice rice flour. Method: Clean the live fish, cut it into pieces, and wash them. Add seasonings, rice flour, and cooked lard, mix well, and marinate for 5 minutes. Place into a bamboo tube, cover, and steam in a steamer for 30 minutes, then serve.
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How to manage fish fingerlings in autumn? These technical points must be mastered
(1) Pond clearing. After the beginning of autumn, the fingerlings should be transferred to a pond that has been cleared and disinfected for cultivation, so that the fingerlings can safely overwinter. Where there are difficulties in the turnover of water sources and fish ponds, all the fingerlings can be transferred out for temporary holding, and the original pond can be disinfected with 75-100 kg of quicklime per mu, the water quality can be fertilized according to conventional methods, and the fingerlings can be transferred back after the drug has dissipated. (2) Separate rearing. The specifications of the fingerlings stocked in the same pond must be consistent. Large-sized fingerlings have a large food intake and a strong ability to compete for food. If small-sized fingerlings are stocked at the same time, the small-sized fingerlings will
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What are the correct medication methods for fish?
The drugs used to prevent and treat fish diseases mainly include halogens (bleaching powder, sodium chloride, iodine, etc.), heavy metal salts (copper sulfate and ferrous sulfate, copper chloride, potassium dichromate, etc.), sulfonamides (sulfadiazine, sulfathiazole, sulfaguanidine, etc.), furans (nitrofurazone, furazolidone, etc.), organophosphate insecticides (trichlorfon, etc.), antibiotics (penicillin, streptomycin, chloramphenicol, chlortetracycline, oxytetracycline, erythromycin, etc.), Chinese herbal medicines (, , garlic, Euphorbia humifusa, Acalypha australis, etc.), with
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Symptoms and Prevention and Treatment Methods of Fish Intestinal Fungal Disease
The pathogen is Basidiobolus sp., belonging to the class Zygomycetes, order Entomophthorales, family Basidiobolaceae. Symptoms: The anterior abdomen and the area in front of the anus of diseased fish are noticeably swollen, forming two white protrusions. Because the anus is blocked, the diseased fish cannot defecate and soon dies. After death, the abdominal wall quickly rots through, exposing the viscous internal organs. Dissection of diseased fish reveals a white, sticky, fat-like substance coating the outside of the stomach and intestines; the intestines become thickened and white, with a thinned intestinal wall, and the interior is filled with hyphae and their conidia, especially densely packed at the end of the intestine. In a small number of diseased fish, hyphae are also distributed in the stomach, but no infection was observed
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How to identify the quality of fish feed? These practical tips are a must-know
The quality of pelleted feed for fish is closely related to farming profitability and should be given great attention. Its quality is mainly judged by five aspects: "look, smell, twist, soak, and chew," introduced as follows: First, look. Pelleted feed for fish is made by uniformly mixing and pelletizing several main raw materials such as fishmeal, soybean meal, cottonseed meal, rapeseed meal, wheat middlings, and meat-and-bone meal in a certain proportion. If there is more fishmeal and soybean meal, the feed color is slightly yellow; when there is more miscellaneous meal, the feed color is dark red; when there is more wheat middlings, the feed color is slightly grayish white, and so on.
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Key Points from the Seminar on Pollution-Free Fishery Product Certification
On August 14, at the 2007 National Pollution-Free Fishery Product Certification Exchange Seminar held in Shenyang, Liaoning Province, the person in charge of the Fishery Sub-center of the Agricultural Product Quality Safety Center of the Ministry of Agriculture stated: at present, China's fishery product certification rate (annual output of certified products/annual output of aquatic products) is still very low. In particular, in major fishery provinces with an annual output of more than 1 million tons, the certification rate is below 10%. China is a major fishery production country. In order to adapt to domestic and international consumption trends for fishery products and ensure the quality of fishery products
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What are the prevention and control methods for fish gyrodactyliasis?
Pathogen and prevalence The pathogens of fish gyrodactyliasis are Gyrodactylus medius, Gyrodactylus bacterialis, and Gyrodactylus elegans. This disease is mainly prevalent in spring and from late autumn to early winter, and excessive stocking density in ponds is the main cause of fish outbreaks. Symptoms Sick fish have a layer of grayish-white mucus on the skin and are thin and weak. In the early stage of the disease, they are extremely restless, sometimes swimming wildly, sometimes swimming sharply on their side. They rub against water grasses or the edges of tanks, trying to get rid of the infestation of the pathogens. Subsequently, appetite decreases, swimming becomes slow, and eventually they die. Prevention and control methods 1. When
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What kind of fish is the beautiful-banded loach? Introduction to its species characteristics
Common name: beautiful-banded loach. Origin and season: distributed in the Yuanjiang River system. Introduction: The head is slightly flat and depressed, with the cheek area bulging out. The lip surface is smooth or wrinkled. The tooth-like protrusion on the upper jaw is relatively weak, and the center of the lower jaw has a "V"-shaped notch, but it is sometimes not obvious. Body scales are small and fine, distributed only after the origin of the dorsal fin. The lateral line is complete. In small individuals, the head has spots only on the dorsal surface, while in larger specimens there are also spots or markings on the cheek area. A bottom-dwelling fish, inhabiting river sections with fast-flowing water and gravel substrates. The individuals are relatively large,
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What varieties of freshwater angelfish are there? A detailed guide to common species classification
1. Common Angelfish Scientific name: pterophyllum scalare English name: Angelfish Native to the waters from the central Amazon River to the Peru and Ecuador region, it is the original species from which today's general artificially improved angelfish breeds are derived. In its scientific name, pterophyllum means "as soft and light as a feather," while scalare describes its body stripes as being like a ladder. Apart from breeding, there are no obvious external sexual characteristics; the male's external genital organ is pointed, while the female's is
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