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How to rescue pond fish after ammonia-nitrogen poisoning?
When carp, grass carp, bream, white pomfret, crucian carp, etc. are fed with pelleted feed, because the feeding amount is large, excrement and leftover feed increase, and the nitrogenous substances produced by protein decomposition increase accordingly. If even slightly careless, these fish will suffer ammonia-nitrogen poisoning, which at best affects normal growth and at worst causes the death of the fish. The identification and rescue methods for ammonia-nitrogen poisoning in pond fish are described below. I. Identification of poisoning 1. Occurrence characteristics. Ammonia-nitrogen poisoning has no distinction of season, morning or evening, or good or bad weather, and is mostly seen in adult fish
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Common Disease Prevention and Treatment Methods and Key Technical Points for Fish and Crabs
I. Grass carp hemorrhagic disease. Symptoms: bleeding in the fins, mouth cavity, eye sockets, muscles, and intestines, partially or entirely bright red. Prevention and treatment: 1. Broadcast dibromohydantoin or chlorine dioxide over the entire pond, using 200 grams of dibromohydantoin or chlorine dioxide per 1 mu of water surface at a depth of 1 m. Apply once more after 2-3 days. 2. Mix into bait and feed Yu'erkang, mixing 1 kg of Yu'erkang per 50 kg of feed, and feed continuously for three days. 3. Mix into bait and feed Suke, mixing 50 grams of Suke per 50 kg of feed, feeding once a day for three days as one treatment course. If combined with external application of dibromohydantoin,
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How to make Pan-Fried Silver Fish (Guo Yi Yin Yu) delicious? Detailed steps shared
[Cuisine]Shandong cuisine [Ingredients]150 g silver fish, 50 g egg liquid, 2 g salt, 1 g monosodium glutamate (MSG), 8 ml cooking wine, 0.25 g pepper powder, 20 g starch, 2 g scallion, 1 ml vinegar, 45 g vegetable oil, 2 g sesame oil, 30 g stock. [Preparation process]1 Wash the silver fish, wipe off the water with a clean cloth, put into a large bowl, add cooking wine, MSG, salt, pepper powder and sesame oil, and marinate until flavored. 2 Beat the eggs with chopsticks. Coat the fish evenly with starch.
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Electric shocks to live fish can effectively extend transport time
Fisheries experts have found that giving live fish electric shocks to induce a state of suspended animation can extend storage and transport time. The method is to apply a voltage of 5000 volts to each kilogram of live fish such as sea bream for 30 seconds, then let them breathe oxygen for 5 minutes. In this way, the fish carry out the minimal breathing necessary to sustain life and enter a state of suspended animation. Fish in this state of suspended animation consume almost no oxygen and can be stored and transported at a ratio of "half fish, half water," which not only greatly saves on transport costs,
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How do you make Five Willow Fish Head? The detailed cooking steps are all here
Ingredients: silver carp fish head, shredded ham, shredded rehydrated shiitake mushrooms, shredded bamboo shoots, shredded pickled red chilies, shredded green bell pepper, scallion, ginger, garlic, cooking wine, soy sauce, vinegar, white sugar, refined salt, MSG, pepper powder, sesame oil, water starch, salad oil, etc. Method: Remove the gills from the fish head and rinse it clean, then split it open from the lower jaw with a knife, but do not cut it all the way through, so it opens into one large piece shaped like a "hinge." After rinsing clean, marinate briefly with cooking wine and refined salt, place on a plate and steam over high heat for about 15 minutes, then take it out and pour off the liquid from the plate. Heat a wok over the fire, pour in oil, and add the several kinds of shredded ingredients to the wok to stir-fry
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Recipe and Features of Milk Fish Rolls
Ingredients: Mandarin fish. Seasonings: salt, MSG, yellow wine, fresh milk, water chestnut flour, stock. Method: (1) Remove the internal organs and bones from the mandarin fish, slice it into pieces, roll them into fish rolls, and coat with starch. (2) Briefly fry the fish rolls in oil, then remove them; add stock and seasonings to the pan, and after the fish rolls come to a boil, add the fresh milk and thicken with water chestnut flour. Features: tender; fresh, smooth, with the fragrance of milk.
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How is swordfish processed? A detailed explanation of swordfish processing techniques
Swordfish (xiphias gladius linnaeus, Common swordfish) is a large deep-sea fish, named for the shape of its upper jaw, which is flat on top and bottom and thick in the middle with thin edges, like a sharp treasured sword. But because of its speed, like an arrow released from the bowstring, it is also called the swordfish. It is distributed in the Indian Ocean, the Atlantic Ocean and the Pacific Ocean. The coast of the Americas in the western Atlantic is the main producing area of swordfish, and it is mainly caught by longline fishing. Most of the individuals caught are about 10-100 kg, and those above 100 kg
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Clownfish Breeding Techniques and Methods Explained in Detail
Turban snails, five-claw scallops and the like, just like the abalone (jiukong shellfish) we commonly eat, can be artificially bred: when the gonads are mature, a simple method of raising or lowering the temperature can be applied to stimulate them to release eggs and sperm. First take out the mature broodstock, with a male-to-female ratio of about 1:3, use a heater or ice cubes to slowly raise or lower the water temperature by about 4°C, then rapidly lower or raise it by 2°C, then place them back in the original tank to return to room temperature, and a large amount of white smoke-like sperm and egg granules can be seen being released. In most shellfish, females slightly outnumber males. Taking the abalone as an example,
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What kind of fish is the red drum? Breed characteristics and farming techniques
Breed name: red drum English name: redfish Common names: redfish, red croaker, spotted tail fish, channel bass Scientific name: Sciaenops ocellatus Biological characteristics (1) Morphological characteristics The red drum is spindle-shaped, laterally compressed, with a slightly raised back that is highest at the origin of the dorsal fin. The head is medium-sized, the mouth cleft is relatively large and terminal, and the teeth are small, closely arranged and fairly sharp. There are two pairs of nostrils, the rear pair oval
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How to prevent fish from oxygen deprivation in winter? These practical methods you need to 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 the direct dissolution of oxygen from the air into the water. However, in the cold winter, once the pond surface freezes over, oxygen from the air cannot dissolve into the fish pond. When heavy snow covers the ice surface, sunlight cannot shine directly into the pond water, and 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. If the water quality is poor, the fish are weak, and management is poor, it can easily cause fish to suffocate and die from lack of oxygen.
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