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Diagnosing Fish and Shrimp Diseases by Color and Disease Prevention and Treatment Methods
After fish and shrimp become ill, a certain part of their body or a certain organ takes on a distinctive color, which becomes a characteristic symptom of the disease they are suffering from. Animal medicine workers use this to name the disease for identification, prevention and treatment. This is a commonly used method in the animal medicine field, briefly described as follows: 1. "Red" diagnosis (1) Eel red spot disease is caused by Pseudomonas anguilliseptica, mainly harming Japanese eels; European eels are not easily infected. Symptoms: pinpoint hemorrhages appear on the lower jaw, operculum, base of the pectoral fins and the body surface of the abdomen, with death occurring within 1 to 2
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How to keep fish fresh? These five methods are very practical
Fish is usually kept fresh in the refrigerator, but this often changes its original flavor. To solve this problem, there are five methods: 1. Perilla leaf preservation: wrap the fish in perilla leaves and place it in a cool place; this can extend the fish's freshness, but it should not exceed 24 hours. 2. Wet grass preservation: soak rice straw or other weeds thoroughly in water, place the live fish in the middle, sprinkle water once every 4 hours, and cover the fish's eyes; the fish can live for 12 hours. 3. Wine drop preservation: drop a few drops of high-proof liquor into the fish's gills or on both cheeks to make the fish drunk and fall over, then place it in a ventilated
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Safe Transport Methods and Precautions for Spring Fish Stock
Early spring is the season for releasing fry and fingerlings, and transporting fry and fingerlings between locations has become an important part of shallow-water aquaculture production. Transport must be safe and efficient, and the survival rate during transport must be ensured and improved. When selecting fingerlings, choose those with thick flesh on the back and tail, a robust body, bright coloration, intact scales and fin rays, no wounds or parasites on the body surface, active swimming in the net cage, a strong ability to swim against the current, and that gather densely in one spot of the cage with heads down and tails up, straining against the water flow. Fry and fingerling transport plastic bags
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What Kind of Fish Is the Brook Trout? A Guide to Its Characteristics and Farming
Morphological characteristics: The brook trout, also known as the American brook trout, is brightly colored and the smallest in size among all salmonid fish, generally weighing no more than 2 kg (the highest record is 8 kg). The color range of the brook trout usually varies from olive green to dark brown. Its back has many olive-colored worm-like markings, its sides have olive-colored round spots, and the lower part of both sides of the body also has some red dots, and each red dot is set within a blue circle, making it very beautiful. It is the most beautifully colored of all salmonid fish
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What are the living habits of the red swamp crayfish? A detailed explanation in this article
The red swamp crayfish is commonly known as the crayfish. For beginners raising red swamp crayfish, understanding the living habits of the red swamp crayfish and taking targeted aquaculture technical measures is the key factor for successful red swamp crayfish farming. The main living habits of the red swamp crayfish related to farming are introduced below. Activity habits: The red swamp crayfish is a nocturnal animal that lives a benthic crawling life. During the day it often hides in dim corners at the bottom of the water body, beside rocks, in grass or in burrows, and comes out at night to feed. Therefore, feed should be given mainly as a single afternoon feeding. The red
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Practical Methods of Using Garlic to Prevent and Treat Fish Diseases
1. Treating enteritis: For every 100 kg of fish, use 0.5 kg of garlic bulbs, plus 0.3 kg of table salt, mix with feed and feed to the fish for 3-6 consecutive days. 2. Treating hemorrhagic disease: For every 10,000 fish, use 0.25 kg of garlic bulbs, 4 kg of alligator weed (fresh), and 0.2 kg of table salt, grind together with soybean cake and feed, twice a day for 4 consecutive days. 3. Treating dropsy (scale-standing disease): Add 0.25 kg of mashed garlic bulbs to every 50 kg of water, and soaking the diseased fish several times gives a good therapeutic effect. 4
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Practical Tips for Cleverly Using Garlic in Fish Farming
I. Garlic Can Be Used as a Feed Additive for Fish (1) Fresh garlic. Take fresh garlic and make it into garlic paste, then mix it directly into the bait for feeding, or take 1%-5% fresh garlic and add it to the fish compound feed, crush it into powder with a grinder, mix evenly, and use directly. After peeling the garlic, grind it with an equal amount of cool boiled water into a slurry and filter it, then mix 3% of the filtrate into the feed to prevent feed mold.
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Fish and Mutton Delight
Cuisine: Jiangsu cuisine Ingredients/Seasonings: 1 fresh snakehead fish (75000 g), 600 g cooked mutton with skin, 10 hearts of green vegetables, 60 g soy sauce, 40 g white sugar, 2 g monosodium glutamate, 2 g refined salt, 10 g scallion knots, 10 g ginger slices, an appropriate amount of pepper. Preparation process: 1. Clean the snakehead fish and remove the head and tail. Cut the fish meat into rectangular pieces, and also cut the cooked mutton with skin into rectangular pieces. 2. Heat oil in a wok, add scallions and ginger and stir-fry until fragrant, add the snakehead fish and fry briefly,
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How to prevent fish from oxygen deprivation in winter? These methods you must master
In winter, although the feeding activity of fish in ponds decreases, they still need a certain amount of dissolved oxygen to maintain slow breathing. The dissolved oxygen in a pond mainly comes from the photosynthesis of phytoplankton and from oxygen in the air dissolving directly into the water. However, in the cold winter, once the pond surface freezes over, oxygen in the air can no longer dissolve into the fish pond. When heavy snow covers the ice surface, sunlight cannot shine directly into the pond water, so the green plants in the water cannot carry out photosynthesis to produce oxygen. Moreover, in winter most fish gather at the bottom of the water,
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What diseases can fish vitamin deficiency cause?
1. vb1 deficiency can lead to loss of balance and darkened body color in fish. 2. vb2 deficiency can lead to lens opacity and fin rot in fish. Some reports suggest that albinism in Japanese flounder is related to vb2 content. 3. vb6 deficiency can lead to neurological symptoms such as convulsions and abnormal swimming in fish. It can also lead to spinal curvature. According to another report, when the balance between vb6 and protein is disrupted, the disease resistance of fish decreases. 4. vc, also known as ascorbic acid, when deficient, can cause fish
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