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Abnormal Behavior and Cause Analysis of Sick Discus Fish
For a generally sick discus fish, we can roughly understand its possible causes from abnormal behavior, appearance, and so on. Abnormal behaviors of sick fish and their causes: 1. The fish floats to the water surface, moves sluggishly, and looks listless -- oxygen deficiency, gill parasites, and bacterial infection. 2. Feeding rate decreases -- water quality may have deteriorated. 3. Gathers in one corner at the bottom of the tank, clamps its fins, etc. -- may have internal or external parasites, bacterial infection, etc. 4. Rubs against the tank wall or heater tube -- external parasite infection. 5
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How do you make spicy fish with sheet jelly noodles taste great? A recipe for spicy fish with sheet jelly noodles
Ingredients: 200 g live carp flesh, dried sheet jelly noodles, green bell pepper segments, red chili pepper segments. Seasonings: sweet fermented flour sauce, soy sauce, cooking wine, shredded scallion, refined salt, lard, caramel color. Method: Cut the live carp flesh into thick slices 3 cm long and 1 cm wide; break the dried sheet jelly noodles into small pieces 3 cm square and soak them soft in warm water. Put the chicken stock, sweet fermented flour sauce, soy sauce, cooking wine, shredded scallion, refined salt, lard, caramel color, green bell pepper segments, red chili pepper segments and the fish flesh together into a pot, place over high heat and bring to a boil, then switch to low heat and simmer
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How to handle a fish after the gallbladder is broken so it does not taste bitter
When preparing fish, never break the gallbladder. This is because the bile is extremely bitter, and once it touches the flesh it makes the flesh very bitter too, and no amount of washing or seasoning will help. What is more, fish gallbladder contains mild toxins, and even high heat will not eliminate the toxicity. So what should you do if you do break the gallbladder? Apply wine, baking soda or baking powder to the contaminated surface of the flesh to dissolve the bile, then rinse with cold water, and the bitterness can be removed.
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Sources and selection methods of yellow catfish broodstock
Broodstock for artificial breeding can be directly caught and selected from rivers, lakes, reservoirs, ponds and other water bodies; this is currently the common method used by aquaculture units for artificial breeding of yellow catfish. If conditions permit, you can cultivate yellow catfish broodstock yourself and then select from them. When catching broodstock from rivers, lakes, outer waters, reservoirs or ponds, the following points should be noted: Specific requirements ① Broodstock should be caught in autumn and winter, when the water temperature is lower, which is conducive to selection and handling, and especially easy for transporting
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How to make silverfish baked eggs? A simple home-style recipe that is easy to learn
Ingredients: 4 eggs, 1/3 LB silverfish, some green peas. Seasoning: salt, 1 slice ginger, vinegar. Method: 1. First squeeze the silverfish dry, add a little salt, stir-fry briefly in an oiled pan with one slice of ginger, then remove and set aside. Remove the ginger slice. 2. Stir-fry the green peas until cooked, then remove and set aside. 3. Beat 4 eggs, add some salt and mix well. Heat oil in a pan, using a little more cooking oil, and heat over high heat until 80 to 90 percent hot (the oil is very hot). Pour in the eggs and fry into one large egg pancake, which takes only a few seconds, then immediately turn to low heat and bake.
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Technical Measures to Reduce the Mortality Rate of Induced Spawning Broodfish
Reducing the death of induced spawning broodfish is an important technical task in fry aquaculture. There are two main factors causing the death of induced spawning broodfish. First, broodfish consume a great deal of physical energy during the spawning and reproduction process, which increases the side effects of the inducing drugs and lowers the body's resistance. If the fish is severely injured, various pathogens will take the opportunity to infect the fish body, causing disease and leading to the death of the broodfish. Second, the broodfish has a poor physique, or the water temperature fluctuates greatly during induction, or the dosage of the inducing drugs is improper (too high or too low), so the broodfish cannot spawn normally or experiences difficult spawning, and this in turn causes its own physiological activities to become disordered and leads to death.
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A Detailed Explanation of Tuna Fishing Methods and Operational Procedures
There are quite a few methods for catching tuna, and the most popular one today is longline fishing. Longline fisheries are divided into three types: surface longline, bottom longline, and midwater longline. Tuna longline fishing gear is mainly composed of a main line, branch lines, floats, float lines, and hooks, that is, a tool for catching tuna by hanging several hooked branch lines from an extended main line. Several floats are tied to the main line, and the float lines between the main line and the floats as well as the length of the branch lines serve to adjust the fishing depth. The hooks need to be baited. The bait mainly includes frozen saury, squid, sardine
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What should you pay attention to when eating fish head? These points need to be understood
Professor Wang Cunxin, a fish research expert at the Institute of Oceanology, Chinese Academy of Sciences, introduced that China has four major domesticated fish, namely black carp, grass carp, silver carp and bighead carp. Silver carp is also called silver carp or white silver carp. Among bighead carp, spotted bighead carp is more common, and the fish heads we usually eat in restaurants are mainly white silver carp and spotted bighead carp. The reason these two fish are used for fish head dishes is, first, because they grow quickly and can be artificially farmed; second, because black carp and grass carp mainly eat grass, while silver carp and bighead carp mainly eat plankton, so they naturally have more meat than the former two. The head of white silver carp, especially spotted bighead carp
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What kind of fish is the Achilles Tang? Let us introduce you to this marine ornamental fish
Scientific name: Acanthurus achilles Maximum body length: 20 cm Diet: herbivorous Feed supply: artificial dry pellet feed, natural seaweed, marine vegetables Territoriality: strong Suitable for reef tanks: caution Recommended minimum aquarium volume: over 400 liters Difficulty of care: difficult The Achilles Tang needs enough space to move around, and it is recommended to provide at least over 400 liters of water to keep it. The Achilles Tang is also quite territorial,
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What kind of fish is the Yellow River plateau loach? Let's get to know this plateau loach
Common name: pike. Origin and season: distributed in the main stream and tributaries of the upper Yellow River. Introduction: a relatively large-bodied fish of the loach family. The head and front part of the body are rather flat; the caudal peduncle is low and long. The mouth opening is large; the lips are narrow, with a smooth surface or shallow folds. The barbels are of medium length. The lower half of the last unbranched fin ray of the dorsal fin is hardened. The body has no scales, and the skin bears short rod-shaped cutaneous keels.
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