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Fish Farming: Suitable Dosages of Medication for Several Fish Species
The dosage must not be too high, otherwise it may cause phytotoxicity to the cultured species. In particular, fish such as freshwater pomfret (piaractus brachypomus) and mandarin fish are sensitive to certain medications, and improper use can easily cause death. 1. Freshwater pomfret. Freshwater pomfret is most sensitive to organophosphorus pesticides. Therefore, the use of medications such as trichlorfon and dichlorvos is prohibited. 2. Mandarin fish. Mandarin fish is relatively sensitive to medications such as trichlorfon and copper chloride. When the concentration of trichlorfon is above 0.2 ml/L, or the concentration of copper chloride is above 0.7 mg/L, it can cause poisoning and death in mandarin fish. Therefore, it is necessary to master
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Detailed Introduction to Common Fish Feed Formulas
1. Carp feed formula. ① Wheat bran 43%, fishmeal 30%, soybean cake 15%, barley 10%, additives 2%. ② Soybean cake 50%, fishmeal 15%, wheat bran 15%, rice bran 15%, vitamins 1%, inorganic salts 1%, antibiotics, scraps 1%, binder 2%. 2. Grass carp feed formula. ① Rice bran 40%, wheat bran 38%, soybean cake 10%, fishmeal 10%, yeast powder 2%. ② Cornmeal 70%, fishmeal 10%, soybean cake meal 15%, wheat bran 5%. On this basis, additionally add (
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Mushroom spent substrate can be used to feed fish; fish farmers should stop throwing it away as waste
In places where mushrooms are cultivated, a large amount of discarded mushroom spent substrate is produced every year. This mushroom spent substrate is rich in crude protein, crude fat and nitrogen-free extract, and also contains minerals such as calcium, phosphorus, potassium and silicon, so it is quite nutritious. Therefore, it can be used as a good feed for fish. The method for feeding fish with mushroom spent substrate is: each time the mushroom house removes mushroom spent substrate, first pick out mud clumps, gravel, iron nails, broken glass and other miscellaneous items from the substrate, then move it into sunlight to dry, and crush it into powder with a grinder; then, according to the proportion of feed
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How to make delicious Jade Fish Slices? An easy-to-learn home-style recipe
Main ingredients: half a jin of fish fillet, half a head of lettuce, 1 tsp each of minced ginger, minced garlic, and minced scallion. Seasonings: 1 tbsp each of cooking wine and sugar, 3 tbsp of tomato ketchup, half a tsp of salt, half a cup of water, 1 tsp of cornstarch. Method: 1. Cut the fish into thin slices and marinate with a little wine. 2. Coat each fish slice with a layer of dry cornstarch, drop into a wok of oil heated to 70 percent hot, and fry until slightly golden, then remove. 3. Wash the lettuce, cut into fine shreds, and arrange around the edge of the plate. 4. Heat oil in a wok, use 2 tbsp of oil to stir-fry the minced scallion, ginger, and garlic until fragrant,
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Identification Methods and Correct Usage Techniques for Common Fish Medications
I. Antibacterial Agents (1) Furazolidone, also known as furaltadone. Yellow powder, odorless, with broad-spectrum antibacterial action and relatively low toxicity; can be administered orally or as a bath, mainly used to prevent and treat eel gill rot, enteritis, red fin disease, and red spot disease. For oral administration, mix 15-20 g of the drug per 100 kg of feed, for a course of 3-5 days; for bath treatment, scatter the drug solution over the entire pond at 2 g per cubic meter. Because the drug is poorly soluble in water, it can first be soaked and mixed with alcohol before use. (2) Chloramphenicol. White powdery drug, easily soluble in water, effective against both Gram-negative
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Key Technical Points and Methods for Fish Polyculture Explained
In ponds where monosex tilapia and pufferfish are the main cultured species, under artificial feed feeding conditions, there are usually many freshwater shrimp, which are the best bait for the marble goby (Thai snakehead gudgeon). 50-80 marble goby fry can be stocked at the same time per mu, with a small number of artificial fish nests placed, and 20-30 kg of marble goby can be additionally harvested per mu at the same time.
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How to make pan-fried fish with sauce taste delicious? Detailed steps
1) Clean one trout and make a few cuts on both sides so it absorbs the flavor more easily. 3 scallions, cut diagonally into sections. 2) Stuff most of the scallion sections into the trout's belly, coat both sides well with light soy sauce, and marinate for about 20 or 30 minutes. 3) Prepare the dipping sauce: half a spoonful of Liubiju dried paste + diluted with boiling water + a small half spoonful of brown sugar + a small half of a chopped hot pepper + minced ginger + a few drops of fish sauce. This sauce was something I mixed at random, and it turned out quite tasty, with a very strong savory bean paste aroma. Originally it was supposed to use some kind of "tamarind sauce," but I did not
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Seven Tips for Improving the Effectiveness of Oral Fish Medication
1. Distinguish between prevention and treatment, and the key lies in prevention. Fish living in water have hidden illnesses that are difficult to detect. Once dead fish are found, the losses are great, and treating fish diseases is relatively difficult, bringing many inconveniences. Therefore, the guiding principle of "prevent first when there is no disease, treat early when there is disease, and prevention is more important than treatment" should be actively implemented, and the concept of giving priority to preventive medication should be established. 2. Cleverly combine Chinese and Western medicines. Chinese herbal medicines for treating fish diseases have a long duration of efficacy, few side effects, and low prevention and treatment costs; Western medicines have the characteristics of rapid efficacy and high cost. Practice has proved that when there is therapeutic effect
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What trace elements are needed for keeping clownfish?
To keep marine fish, of course you need "seawater," and natural seawater is certainly the most suitable for keeping them, but due to environmental pollution, using seawater drawn from the seaside is not the most appropriate approach; instead, seawater should be drawn from the deep ocean far offshore, and this seawater drawn from the ocean must undergo many processing steps before it can be used. First, the container holding the seawater must never be a metal container, because the metal ions will dissolve into the water and harm the health of the aquatic life. Second, it must be sealed and stored in a place not exposed to sunlight.
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Why do female swordtail fish undergo sex reversal?
The so-called "sex reversal" of female fish refers to the gradual masculinization of some female fish that have given birth to fry: the body becomes slender, a sword-shaped protrusion grows below the caudal fin, the anal fin transforms into a rod-shaped gonopodium, and they begin to chase female fish, mate with them and fertilize them, and reproduce offspring. But it is only female fish turning into male fish; male-to-female reversal has not been observed. Regarding this issue, some people have recently raised different opinions: they believe that swordtail fish cannot undergo sex reversal, and their natural male-to-female ratio is always 1:2 to 1:1.5. Although the reproductive organs of swordtail fry begin
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