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How to rescue fish from toxic water? Three methods for treating fish
Excess dissolved oxygen toxic water syndrome: Excessive dissolved oxygen in the water body can cause eutrophication of the water, leading to gas bubble disease and various other conditions in fish. Many small bubbles adhere to the fish gills, causing the fish to float up or lose balance when swimming. There are white bubbles in the fish intestines, or relatively many bubbles are attached to the fish body surface, fin rays, and gill filaments, and the fish body floats on the water surface; in severe cases, it can cause fish to die in batches. When bubbles appear in the fish pond, first, clean water should be injected quickly while discharging part of the pond water; fish with mild symptoms can expel the bubbles in clean water; second, use 400-60 per mu of water surface
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Correct preparation and use of fish body disinfectant solutions
1. Bleaching powder solution: prepare at a concentration of 1 gram of bleaching powder per 100 kg of water. At a water temperature of 10-15°C, soak the fish for 15-30 minutes; this has a good effect on preventing bacterial fish diseases. 2. Copper sulfate solution: prepare at a concentration of 0.8 grams of copper sulfate per 100 kg of water. At a water temperature below 15°C, soak the fish for 20-30 minutes; this can kill various parasites such as gill trichodinids, trichodinids, and chilodonella. 3. Potassium permanganate solution: prepare at a concentration of 1 gram of potassium permanganate per 50 kg of water.
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What kind of fish is the scaled loach? Let's get to know this fish species
Common name: Scaled loach. Origin and season: Distributed in Thailand and the Lancang River system of China. Description: The anterior and posterior nostrils are closely adjacent. The cheeks bulge outward. The mouth opening is broad and arc-shaped. The upper and lower lips are thick, with no obvious wrinkles on the lip surface, and there is a deep notch in the center of the lower lip. The maxillary odontoid process is relatively well developed. The inner side of the first gill arch has 9-10 gill rakers. The base of the pelvic fin originates opposite to or slightly behind the origin of the dorsal fin. The sides of the body have no markings or indistinct vertical bars. A bottom-dwelling fish, living in river tributaries with gravel substrates; individuals are relatively large and it has certain economic
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How Are Dried Silverfish Made? Processing Methods and Step-by-Step Guide
Dried raw aquatic products refer to products made by directly drying the raw material without salting, seasoning, or boiling. Large, thick, and firm raw materials are not suitable for the production of dried raw products; instead, small products with a small body size, thin flesh, and easy, rapid drying are suitable, such as silverfish, small fish and shrimp, nori, kelp, squid, fish roe, and fish maw. If drying conditions are good, dried raw products undergo relatively little change in tissue structure and quality, and they also rehydrate well, basically retaining their original color, aroma, flavor, and shape after rehydration. The disadvantage is that because there is no sterilization treatment at all during processing, and dehydration alone is used to inhibit bacterial
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Causes and Prevention Methods of Common Fish Hemorrhage Symptoms
In recent years, with the increase in aquaculture density and the deterioration of water environments, the phenomenon of hemorrhage symptoms in commonly farmed fish has become more frequent, causing significant losses to farmers. There are many causes of hemorrhage symptoms in fish; some are caused by viral infections, some by bacteria, and others by feed and environmental stress factors. Because farmers cannot correctly diagnose and distinguish the causes, they often end up using the wrong medication, achieving poor results, and even causing serious consequences such as mass fish deaths. The following are several causes of fish hemorrhage and their prevention and treatment methods: 1.
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The fine-scaled xenocypris is a small food fish with relatively high economic value.
The fine-scaled xenocypris is commonly known as shaguzi, huangpian, huangpi, huangweidiaozi, and so on. It is the largest individual in the subfamily Xenocyprinae, and is a small to medium-sized food fish widely distributed in the rivers and lakes of China. It has a high proportion of flesh, and the meat is delicious and tender. According to measurements, the viscera account for only 8%-12% of body weight, the protein content accounts for 22%, and the fat content accounts for about 2%. It is easy and simple to raise, with a wide range of food sources, mainly feeding on natural food organisms. From the perspective of human consumption, it is a green, high-quality fish species with relatively high economic value.
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Scallion Oil Fish
Ingredients: 1 live grass carp (about 750 g). Seasonings: salt, soy sauce, cooking wine, sesame oil, scallion sections, ginger chunks plus shredded ginger, shredded scallion, monosodium glutamate (MSG), and pepper, each in appropriate amounts. Method: 1. Slaughter the grass carp, remove the scales, clean out the innards, and wash it; score the fish on both sides with straight cuts; put the fish in a pot with scallion sections, ginger chunks and water and cook for about 15 minutes until done, then scoop it out and place it on a fish plate. 2. Sprinkle salt, MSG and pepper over the fish, arrange shredded scallion and shredded ginger on top, add cooking wine and soy sauce and marinate briefly. 3. Heat sesame oil in a wok and pour it over the fish.
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How to make shepherd's purse fish rolls delicious and easy
[Features] Crispy outside and tender inside, fresh fish, fragrant water chestnut. [Ingredients] 750 g yellow croaker. 20 g shepherd's purse, 25 g water chestnut, 30 g shredded pork fat. 10 g scallion, 15 g ginger, 15 g egg white, 15 g Shaoxing wine, 10 g sesame oil, 50 g starch, 200 g peanut oil, 10 g Sichuan peppercorn, 5 g refined salt. [Preparation] Cut the yellow croaker flesh and pork fat into shreds 3.5 cm long and 0.3 cm wide and thick. Peel the water chestnuts and cut into fine shreds: wash the shepherd's purse
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How to Make a Preliminary Judgment on the Quality of Pelleted Fish Feed
In recent years, along with the growing popularity of high-yield fish farming, the use of complete pelleted fish feed in fishery production has become very common. However, because there are many feed brands on the market and great differences exist in quality and grade, the vast number of farmers are unable to judge the merits of its quality. This article introduces a simple method for judging fish feed quality by sensory means. That is: "one look, two sniffs, three twists, four soaks, five chews," for everyone to use as reference when purchasing pelleted feed. 1. Look 1.1 Look at color: pelleted fish feed
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How to keep zebrafish? These care requirements are worth knowing
Zebrafish, also known as blue-striped fish, flower-striped fish, blue zebrafish, Indian fish, and Indian zebrafish, belongs to the Cyprinidae family. It originates from India in South Asia and is distributed in Myanmar, Bangladesh, Singapore, and other places. Zebrafish grows 4-6 cm long, with a spindle-shaped body that is slightly laterally compressed. The head of the zebrafish is somewhat pointed, and its body has zebra-like stripes, hence the name zebrafish. Its back is olive-colored, and multiple blue stripes cover the sides of its body from head to tail. Males have dark blue stripes alternating with lemon yellow, while females have blue stripes alternating with silver-gray. The iris around the zebrafish's eye socket is yellow with a reddish glow. Zebra
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