Tropical fish can be raised in winter

Winter can be raised, to take appropriate measures: most tropical fish water temperature should be 20 ~ 24 ℃, the tank can be placed in the sunrise room, can also be used in the fireplace, kang, heater, electric heater control. Electric heaters are best equipped with thermostatic devices, put in and take out, the first to disconnect. At the same time, to mediate the content of dissolved oxygen in the water; artificial control of water temperature is mainly the use of stoves, kang, heating and other heating measures to heat, in recent years, the market is the use of electric heating appliances continue to increase, is a better heating method, most of the products have an automatic temperature control function, should be preferred to such products. 1. Feeding equipment In addition to aquariums and water filters, tropical fish feeding equipment also includes water circulation and filtration equipment, heating equipment, oxygenation equipment, lighting equipment, pumping equipment and so on. For a single aquarium, you can use a small circulating filter pump, 100-200W heating tube, single- and double-hole air pumps, fluorescent lamps, small submersible pumps and so on. For multiple aquariums, the equipment is more complex. Tropical fish circulation filtration equipment has two kinds of filters and filters outside the box, small aquariums more than the use of box filters or small power circulation filtration pumps, large aquariums more than the use of outside the box filters. Tropical fish heating equipment has a variety of different power heaters, such as 100W, 200W, 500W, 1000W of glass or stainless steel can automatically adjust the temperature of the electric heaters, large fish room heating equipment using boiler room conveying heating, air conditioning, electric heaters and so on. Oxygenation equipment for tropical fish include single-hole air pump, double-hole air pump, four-hole air pump and turbine oxygenator. For a single aquarium, single-hole air pumps can be used. For more than one aquarium, you can choose double-hole or four-hole air pump. Single-hole, double-hole or four-hole air pumps are made of plastic materials, they use the movement of the rubber plug to complete the water oxygen work. Rubber plugs after a long time, there will be rupture or aging, this time to be replaced in a timely manner. Large areas of breeding tropical fish can choose turbine oxygenator, it is made of metal materials, low failure rate, long service life. In addition auxiliary oxygenation equipment such as air stone, oxygen pipeline. Tropical fish lighting equipment to fluorescent lamps, in addition to halogen lamps, mercury lamps and so on. Single aquarium lighting, sometimes can also be used underwater color light, it is a glass closed small lamp, can be placed directly underwater adsorption in the glass tank wall, the lamp can be issued in different colors, such as red, blue, green, white lights, landscape effect is better. Tropical fish pumping equipment more than a small power all-plastic material submersible pump, it is small and lightweight, the power size of 200W, 500W, 1000W, etc., its head 5-10 meters, the use of which can be adsorbed in the tank wall, can be in a few minutes in the aquarium water pumping, safe and reliable. 2. Baiting (1) Feeding habits: Tropical fish feeding water temperature is generally controlled between 24-28 ℃, in this temperature range, tropical fish appetite, rapid growth, it is not affected by changes in the external temperature, always maintained in a relatively stable state. The baits for tropical fish include fish worms, earthworms, ciliated worms, yellow mealworms, small live fish and pellet feed. Tropical fish come in many varieties and sizes, so the choice of bait for different varieties of tropical fish is also different. For tropical fishes with body lengths of 3-12 centimeters, turtle worms are the main bait, supplemented by earthworms, red worms and yellow meal worms. For tropical fish with body length above 12 cm, the turtle worm is small and poor in palatability, so it should be chosen as a slightly larger individual bait, mainly red worms, earthworms, yellow mealworms, small live fish, etc. Most tropical fish use animal bait. Most of the tropical fish to animal-based bait, small varieties can also be domesticated to pellet feed-based, and plant-based bait-based fish is rare. (2) The number of times of baiting: The amount of baiting for tropical fish should be decided according to the size and number of fish. For home rearing of tropical fish, it is usually necessary to bait only 1-2 times a day, and the amount of bait should be eaten within 5-10 minutes. When keeping tropical fish in large quantities, the fish need to be baited 2-3 times a day; for breeding fish in the breeding period, the fish generally need to be baited 3-4 times a day. Due to the small size of tropical fish, limited food, each time the amount of bait to 7-8% full is appropriate, increase the number of times baiting to promote rapid growth of turtles. Most varieties of tropical fish, its bait to turtle worm-based. When the bait is mainly worms, the amount of bait should be controlled to be eaten within lO-30 minutes. When the bait is mainly water worms, the amount of bait control in 5-10 minutes to eat up, each person bait 2-3 times, feeding water worms should be rinsed clean. When the bait is mainly small fish and shrimp, in principle, should be fed more meals and less, tropical fish replacement of new bait, the amount of bait should be gradually increased from less. Tropical fish should stop baiting for l to 2 days before transportation. 3. Water (1) water exchange: water exchange refers to partial water change, which is a simple and effective method often used in tropical fish breeding. Before mixing water, turn off the power of the heater, air pump, circulating filtration pump and other electrical appliances in the aquarium, then use gauze to wipe off the moss on the glass or scenery on the four walls of the aquarium, and let the water stand for 15 minutes, and then all the suspended matter in the water will be sunk into the bottom of the tank, and then gently suck out the bottom of the dirt with a rubber tube. -The amount of water sucked out is about 1/4 to 1/3 of the total amount of water, and then the new water with the same temperature will be prepared and injected slowly along the wall of the tank. (2) water change: water change refers to all the replacement of feed water, it is the simplest and most effective way to change the water quality, but the workload of water change is large, especially when the aquarium is small and scenic, the process is complex and cumbersome. Before changing the water, cut off the power of all electrical appliances in the aquarium, take out all the fish and scenery, and release the water. After rinsing the aquarium, put all the scenery into the new water. Tropical fish feed selection method Carnivorous tropical fish, red spider worms are the best feed, wash before feeding. Hamster worms are suitable for feeding adult tropical fish. Water earthworms in the northern winter, can be fed as live bait, placed in the container can live for 1 month. In addition, lacewings and rotifers can also be fed. Other baits are roughly the same as goldfish. Tropical fish quality identification method Purchase of tropical fish, juvenile fish require large individuals, can grow fast, adult fish should be selected colorful, standard form, beautiful fin shape. Tropical fish stocking density method Tropical fish stocking density can be based on the size of the aquarium specifications: specifications of 36 cm 24 cm 24 cm aquarium, you can put small fish 15, medium-sized fish 6. Specification is 39cm 30cm 30cm, can put small fish 35, medium-sized fish 8, large fish 2. If the size is 60cm 30cm 30cm, 70 small fish, 20 medium fish and 6 large fish can be stocked. The above data can be used as a reference when stocking. Zebrafish feeding method Zebrafish can eat all kinds of animal bait, mild temperament, no requirements for water quality, suitable water temperature of about 25 ℃, can be mixed. Mapfish feeding method Feeding mapfish, water temperature requirements of 22 to 26 ℃, the water quality requirements are not strict, feed its animal bait. Because of the ferocity of swallowing small fish, it is not suitable for mixing with small fish. Red and green lamprey feeding method Feeding red and green lamprey, water quality requirements of weak acidic, pH 6.4 ~ 6.8, hardness 4 ~ 8, water temperature of 22 ~ 24 ℃ is appropriate, love to eat animal bait. Black marlin feeding method Black marlin like water with trace salts, suitable for survival in 20 ℃ ~ 24 ℃ water temperature, water temperature can not be low for a long time, omnivorous, easy to mix. Other Answers apple049 2009-11-11 15:50:11 218.66.88.* The following is to provide you with a good tropical fish must pay attention to all aspects of a comprehensive understanding of the maintenance of knowledge, perhaps more useful than a single understanding of the mood, such as what: 1 foster a good fish to learn to buy a good fish: healthy fish in the lower and middle layers of the body of water to swim, foraging, swimming natural, leisurely, the tail fin is clear and transparent, the tail fin is not a good idea, but a good idea. The caudal fin is clear, transparent and floating. Sinking, floating head, swimming now struggling, trauma, white hair, white spots, tail fin hypertrophy, turbidity, serious blood, single alone, is a sick fish must not buy. 2 Tropical fish do not buy home in a hurry into the tank, the first plastic bag will be loaded with fish into the tank for ten to twenty minutes before opening, and then let the tank water a few times into the bag with the original water in the bag gradually mixed in order to gradually adapt to the fish water temperature, water quality. If there is light irradiation, the light should be turned off, in the dark the fish are quieter and less likely to be frightened. 3 The temperature of the water should not be changed drastically. Tropical fish are most suitable for 24-28 degrees range of life, summer on up to 30 degrees can live normally, but if the sudden temperature change is too large, tropical fish can not adapt. So you have to pay attention to the aquarium store water temperature and your home tank water temperature, the deviation should not be too large, generally within 4 degrees is allowed. 4 Can not change too much water at one time, that will lead to water quality discomfort. Water quality includes pH value, hardness, residual chlorine, dissolved oxygen, nitrates, sulfides, proteins and turbidity. Tropical fish have adapted to live in the original water quality, all the water change, suddenly change the water quality they can not adapt and suffer from water discomfort. If you need to make the bottom of the wash tank, you should also leave most of the old water, wash the tank after the water back to the tank and then add new water. 5 Pay attention to the density of the fish. Tropical fish like to have a large space to move around, and first-time keepers will often buy their favorite fish when they see them, with little regard to how many fish can be kept in the tank, even if you ask the fishmongers for their opinion, they can say that they will let you buy less for profit. In my experience, 1 liter of water is more suitable for 1cm long fish. If your tank holds 100 liters of water, it is safer to feed less than 10 tropical fish over 10cm. In a larger space, the fish are more active, strong and colorful. Excessive density easily leads to lack of oxygen in the water and deterioration of water quality, which is the main cause of tropical fish illness and death. 6 How to feed. Small tank fish should pay attention to the control of feeding, to one or two times a day and 3 to 5 minutes to eat is appropriate. Feed less on cloudy and rainy days, and do not feed at night. Fish need to consume more oxygen when digesting food. On rainy days and evenings, the air pressure is low, and the oxygen dissolved in the water is also low, so feeding fish at such times may lead to serious lack of oxygen in the water and death of fish. Most of the dead fish occur in the evening, the serious lack of oxygen in the water is one of the main reasons. 8 Bait must be clean. Feeding unclean bait will easily lead to fish disease. It is recommended to buy branded frozen fresh food produced by professional companies, such as bloodworms, shrimps, etc., supplemented with beans and vegetables to maintain a full range of nutrients. Although live food is the favorite of goldfish, live food grows in polluted water environment, so you should be careful when putting live food in. 9 Keep the water clean. Tropical fish eat a lot of food, consume a lot of oxygen and discharge a lot of waste, are on the water pollution, breeding germs, leading to tropical fish disease and death. In order to keep the water clean, a filter should be installed, and one-tenth or a little more of the old water should be replaced every day by pumping out the waste from the bottom of the tank. A filter with an aerated design can be used to filter and aerate the water at the same time, which both purifies and oxygenates the water. 10 Oil and grease should not be brought into the water. Grease will float on the surface of the water to cut off the air, so that the oxygen in the water will not be replenished, which will lead to the death of tropical fish due to lack of oxygen. Eating meat or applying hand cream on hands will bring grease into the water and should be carefully avoided. 11 It is best to start with low-priced, easy-to-maintain fish. These fish generally have a strong feeding ability, a strong constitution, and a body that is less susceptible to accidental injury. You can start by raising low-priced fish first, and then raise expensive varieties after accumulating experience, so you will be able to get used to it and achieve success. Tropical fish with the necessary equipment (1) fish tank: tropical fish growth and activities of the place. Keeping tropical fish tanks must choose a slightly larger rectangular glass fish tank. (2) Suction hose: used to change the water when sucking out the dirt on the bottom surface of the fish tank, with a soft rubber tube and glass tube connected and become. The length depends on the height of the aquarium. Generally take one meter two to one meter five. (3) Thermometer: used to measure and regulate the water temperature of the fish tank. (4) Fish net: used to catch and transfer tropical fish. (5) Glass bucket: put the bulb into the glass bucket and sink it into the fish tank for heating and lighting. The mouth of the glass bucket must be 100mm above the water surface to prevent the fish from jumping in. (6) Electric heaters: used to increase the temperature of the fish tank in winter. (7) Air pump: to drive out the carbon dioxide in the fish tank and increase the oxygen content in the water. (8) Filter: Filter out the dirt in the aquarium, keep the water clean, and play the double role of increasing oxygen and purifying the water. (9) Thermostat: used to automatically control the temperature in the aquarium, which can keep the temperature constant for a long time. (10) Food bucket: prevent fish food from floating on the surface of the water, which is favorable to fish predation. It can also prevent fish food from falling into the bottom of the water and drilling into the water plants, which will make the water plant sand black and spoil the water quality. (11) Dirt remover: made of plastic sheet. Used to scrape away the dust and oil on the water surface of the fish tank. Beginning to raise tropical fish preferred peacock fish peacock fish is a small tropical ornamental fish, generally 3 to 5 cm in length, the fish body is delicate and delicate, swim agile and lively, body color colorful. It is mainly produced in South America, Brazil, Venezuela, Guyana and the West Indies and other places, according to its different characteristics and is divided into common peacockfish, swallowtail peacockfish, long-tailed peacockfish, piano tail peacockfish and yellow peacockfish. It should be said that among the many varieties of tropical ornamental fish, peacockfish is not considered a noble fish species, neither its selling price nor the requirements for the surrounding living environment are high, but it is loved by people because of its liveliness and beauty. Especially the male fish is more beautiful, in the greenish-brown body mixed with red, orange, yellow, green, green, blue, purple colors, so it also has a nice name - rainbow fish. At the same time, because of its abdomen has several small blue round spots, round spots around the lighter color rings, very much like the peacock open screen on the eye-shaped spots, and there is a "peacock fish" reputation. Some fish buyers told reporters that the peacock fish is popular, largely due to its gentle and lively temperament, will not fight with other fish, suitable for mixing with some of the fish without aggression; and it is not much choice of food, egg yolks, steamed bread crumbs, etc. can be fed, but the best feeding artificial feeding of fish worms, nematodes, and other live bait; at the same time, it is on the water quality, the water temperature requirements are not high, it's very It is very easy to feed and survive. For first time tropical fish keepers, it is still more cost effective to buy hybrids and degenerate species, as this can accumulate a lot of fish keeping experience in breeding. In addition, it is best to first determine whether you are buying the fish for ornamental purposes or for breeding. If it is just for ornamental purpose, you can pick individuals with bright colors, large tail fins and normal development of all fins; while if it is for breeding good peacockfish species, it is better to pick young and energetic peacockfish because fully matured peacockfish are not suitable for breeding although they have large tail fins and colorful patterns. Generally speaking, the principle of selecting peacockfish is not much different from that of selecting other fish, which only requires that the body surface is free of abnormality, wounds, broken fins and limbs, all fins are not tightened, there is no proliferation of organisms such as white hairs and white dots, there is a desire to eat, and it is best to select an individual that has not been injured or died in the whole tank. However, a key point in purchasing peacockfish is to choose a male peacockfish that is as large as possible, with a large and spreading tail fin, and a lively swimmer. Generally, buy peacock fish that are two or three months old. In addition, while shopping for peacock fish, don't forget to buy another aquarium. The aquarium for peacock fish should not be too big, usually 60 centimeters in length, 30 centimeters in width and 40 centimeters in height, and you should test the water to make sure there is no leakage before buying. After choosing the peacock fish, the next question is the bait. Peacock fish does not require much bait, generally can be used water fleas, water worms or with pellet feed. When all the shopping is done, it is the process of breeding peacock fish. Tropical fish for the first time the "forbidden zone" Just bought the fish, after getting used to the new environment, you can start feeding, generally put the fish in the tank half a day later, if you find that the fish began to peck at the tank wall or the bottom of the sand laid, that is, you can start feeding. Some fish refuse to eat when they change their environment, so it is important to feed the fish the feed they like, which can be balanced with artificial feed and living feed. Be careful with portion sizes and avoid leftover scraps, which can rot and damage water quality. Several causes of tropical fish disease, death: 1, intense changes in water temperature --- suitable for tropical fish survival of the optimal temperature of 25 ℃, but the temperature requirements of different species there are differences, some to be as high as 30 ℃ or so, there are some favorite 20 ℃. Therefore, on average, 25℃ is a generally acceptable temperature. In addition, to avoid drastic changes in water temperature, generally allow changes in the temperature range of 2 degrees. 2, stocking density is too large --- many people see the aquarium can put a lot of lovely fish in a fish tank, so also at home in the fish tank to raise a lot of fish, this feeding method, no matter which kind of fish will die. If you are keeping many different kinds of fish, you must consider the space for each kind of fish and reduce the number of fish. No matter what kind of fish you have, it is never a good thing to have a small tank with a lot of fish. Keeping tropical fish is very similar to the principle of keeping goldfish, the requirement of keeping a relatively wide water surface, and to keep a normal ratio with the number of feeding to ensure that the tropical fish have an adequate supply of oxygen. 3, the type of feed --- tropical fish diet varies according to species, can be roughly divided into animal, plant, omnivorous 3 categories. So we must understand the fish in the tank, what type, what kind of food they like to eat, and categorize and feed them. 4, Disease --- Tropical fish are sick for a number of reasons, including infected by bought sick fish, because the temperature is too low triggered by the white spot disease and water quality due to residual food corruption or fish feces and dirt decomposition due to deterioration and so on. Newly purchased tropical fish often with germs or parasites, because the disease is mild, has not yet appeared more obvious disease, not easy to notice when buying, if not using drugs directly into the tank, as soon as 2-3 days, as slow as 1 week to 2 weeks will be onset of disease, or even cause death. There are two kinds of more commonly used anti-disease disinfectant drugs, the first one is table salt, table salt is safer, more effective, and the source is convenient. Every 10 kilograms of water plus 100-300 grams, that is, formulated into 1-3% concentration of brine, disinfection 5-20 minutes or so, the length of the bath according to the water temperature depends on the temperature, can kill most of the germs and parasites. The second is potassium permanganate, which can be added directly into the fish tank. The concentration of the medicine is 10 kilograms of water with 0.03 grams of potassium permanganate. 0.03 grams of weight potassium permanganate weighing is not convenient. Therefore, first weigh 1 gram of potassium permanganate fully dissolved in 1 kilogram of water, i.e., formulated into one-thousandth of the concentration of the drug solution, stored in a Coca-Cola bottle for backup, and then use a pipette or a syringe to suck up 30 milliliters of potassium permanganate solution to add to the 10 kilograms of water, 24 hours after the use of the drug to change the water. However, it should be noted that for small tropical fish. The toxicity of potassium permanganate is large, after the drug should pay attention to observe the activities of the tropical fish, once found abnormal, immediately rescue, that is, a large number of water changes or fish out of the tropical fish. The accumulation of organic matter such as residual bait and excreta in the fish tank will cause deterioration of water quality. There are two forms of organic matter present in the water column. One is particulate solid organic matter that has not yet been dissolved, and the other is organic matter that has been dissolved in the water. Dissolved organic matter by bacterial decomposition will become toxic ammonia nitrogen and nitrite, if the water body grows a sufficient number of beneficial bacteria (such as nitrifying bacteria) will be toxic ammonia nitrogen and nitrite decomposition into non-toxic substances (nitrate). Therefore, water purification has two purposes: ① the solid organic matter has not been dissolved filter throw; ② cultivate a sufficient number of nitrifying bacteria, decomposition of toxic ammonia and nitrite in the water body. There are two specific treatment methods: First, the use of water treatment cycle equipment. Large, medium-sized aquarium using recycling filtration equipment, small aquariums can use biochemical cotton. Commercialized water treatment circulating filtration equipment of many kinds, there are built-in type, external type, etc., you can also make their own, the general structure consists of three parts. ① stainless steel or plastic made of cylindrical shell; ② cylinder put filter cotton, quartz sand, plastic biochemical ball or biochemical ceramic ring, etc.; ③ small pumps and pipes. Filter cotton, quartz sand is the role of large particles in the body of water to retain organic matter, so often need to be cleaned. The role of biochemical ball and ceramic ring as a carrier for the cultivation of beneficial bacteria, in professional terms, is the cultivation of biofilm, mainly to cultivate a sufficient number of beneficial bacteria, toxic ammonia nitrogen and nitrite in the water decomposition of non-toxic nitrate. Small aquariums can be equipped with 1-2 biochemical cotton and an inflatable pump. Biochemical cotton has the function of filtering solid organic matter and cultivating bacteria. The second is to regularly add beneficial bacteria. There are many varieties of beneficial bacteria, common photosynthetic bacteria, nitrifying bacteria, bacillus and so on. Most of the products sold on the market are compound bacteria. For example, a Japanese product called EM has four major categories consisting of more than 80 strains of bacteria. Some necessary conditions for breeding tropical fish I. Water 1. Water quality All water in nature contains different chemical compositions to a greater or lesser extent, and some chemicals will directly affect the growth and survival of fish, and tropical fish have higher requirements for water. Tap water, river water, well water, lake water, etc. can be used directly to raise goldfish, but can not be used directly to raise tropical fish, otherwise the fish will get sick or even die. The so-called water quality mainly refers to the hardness and pH of the water. The hardness of water is based on the amount of calcium, magnesium and iron salts in the water. It is divided into hard water, soft water and neutral water. Well water and spring water are mostly hard water; tap water and river water are mostly neutral water; rainwater is soft water. Breeding tropical fish should use neutral water, but the tap water in the city is basically in line with the requirements of tropical fish. 2, water change Fish in the survival of the continuous metabolism, to constantly excrete feces, feed the fish bait is also constantly oxidizing and decaying, all of which will affect the water quality, so it is necessary to change the water to the aquarium in a timely manner to keep the water quality fresh. Water change for part of the water change and all the water change. Partial water change is also handed over to the water. Water is drawn from the tank how much water should be supplemented how much water, water does not need to fish and water plants from the tank, generally how much water to not more than a quarter of the total amount of water in the tank is appropriate. Pay attention to the water temperature of the newly added water, as far as possible, and the original tank water temperature is the same. The number of water, one to two times a week in the fall and winter seasons, two to three times a week in the spring and summer seasons, the specific number of times how much according to the turbidity of the water in the fish tank, filtering conditions can be appropriate to reduce the number of times of clear water, filtering conditions can be appropriate to increase the number of times of poor, but can not be too frequent, otherwise the fish will be sick. Second, the temperature temperature is the most important conditions for the survival of tropical fish, there is no suitable water temperature fish can not survive, tropical fish on the water temperature requirements are more demanding, tropical fish on the water temperature is also extremely sensitive. The water temperature for tropical fish is generally 20~30℃. However, there are differences in the water temperature requirements of different types of tropical fish. For example, peacock fish, red swordfish, black marlin and other species can tolerate a water temperature of about 10 ℃ without dying, while swallowfish, tiger fish and other water temperature below 18 ℃ will die. The vast majority of tropical fish and its sensitive to water temperature, water temperature changes ± 2 ℃ and will get a cold, water temperature fluctuations for a long time up and down instability, the fish will suffer from a variety of diseases, therefore, we should try to maintain a constant water temperature. Therefore, the water temperature should be kept as constant as possible. The water temperature should not be too high, as the bacteria in the water will reproduce too fast and affect the water quality. The normal temperature for most fish is 20~24℃, and the breeding water temperature is 25~28℃. Control of water temperature is commonly used in two ways, divided into natural control and artificial control. Oxygen, oxygen is needed for the survival of any living creature, without oxygen there is no life, tropical fish survival is also inseparable from oxygen. The oxygen needed for fish survival is obtained by absorbing the dissolved oxygen in the water through the microvessels in the gills of the fish, and then through the blood circulatory system to bring to and mention a part of the carbon dioxide discharged through the microvessels in the gills of the fish. The amount of dissolved oxygen in the water directly affects the growth of the fish, so it is necessary to ensure that there is enough dissolved oxygen in the water. The dissolved oxygen in the water can be obtained by water mixing and water changing, but it can also be used to produce oxygen by photosynthesis of aquatic plants in the water. The market has a special oxygenation apparatus - air pump, the use of air pump oxygen that is convenient and simple, according to the size of the fish tank to choose the appropriate air pump. The price is relatively cheap. Fourth, fish food Tropical fish, although a wide variety of habits, but their food can be roughly divided into three categories: carnivorous fish, such fish account for the vast majority of tropical fish; omnivorous fish, accounting for a small portion of the tropical fish; vegetarian fish, such fish account for a very small portion of the tropical fish. Here is an introduction to common fish food for carnivorous fish: 1. Daphnia (also known as red spider mites) Fish bugs are reddish in color, medium-sized, swimming in groups in the water, and are rich in protein, fat and calcium. Widely distributed throughout the world, but the life expectancy of this fish worm is short, generally only live one to two days after retrieval. Before feeding the fish, the fish should be washed before feeding. 2, cyclops (also known as green jump) This fish worm individual smaller, lower nutritional value, easy to die, they jumped in the water a stop, faster, slow-moving tropical fish, especially young fish often can not catch up, is a poor bait. 3, red nematodes (also known as water earthworms, maggots) This fish worm body elongated, dark red color, living in the water quality of dirty water bubbles, gutter side of the shallow water, half of the worm's body in the silt, half of the water in the non-stop swinging. Red nematodes are rich in nutrients, containing more protein and fat, and are ideal food for adult fish. Fifth, light Light is very important for the survival of tropical fish, no light tropical fish can not survive. Light has three main roles in feeding tropical fish. Light is the most important factor for photosynthesis in all plants. Without light, plants cannot photosynthesize, absorb carbon dioxide and produce oxygen, and plants cannot maintain their own survival. However, plants also have certain limitations on light requirements, too much light or too long a period of time, water plants will grow green moss, which will affect the photosynthesis of water plants; but too little light or too short a period of time, the branches and leaves of the water plants will turn yellow or even die due to too little photosynthesis. Reasonable light should be, in the sunshine indoor do not accept direct sunlight, and do not set in the window sill and under the window, using the morning and evening sunlight 1 ~ 2 hours can be, of course, the use of the window of the diffused light time can be appropriate to put a little longer. In the absence of sunlight or insufficient sunlight indoors, you can also use artificial light source irradiation, you can use 60-watt incandescent lamps or 40-watt fluorescent lamps irradiation can be about 6 hours a day. Tropical fish growth and reproduction also need light, there is light fish growth faster, the fish will be more gorgeous, the breeding cycle will be shortened. The third function of light is to facilitate viewing. If the house in the dark or the light is too dark house, people can not see the fish tank scenery, can not see the ornamental Tropical ornamental fish breeding technology is the key to the selection and treatment of water quality and feed, the basis of which is the source of the fish species raised by the natural ecological understanding and simulation, that is, when raising tropical fish must pay attention to the object of raising the hometown of the characteristics of the waters. Experience has repeatedly shown that to raise good tropical fish, especially valuable and delicate high-grade varieties, must be created in the aquarium with its origin in the natural ecology, conditions the same or close to the environment. 1, water quality treatment Freshwater tropical fish are generally born on both sides of the equator of the Earth's tropical freshwater waters. Among them, the Amazon River in South America, Southeast Asia, Thailand and the Malay Peninsula and other places, the Congo Basin in Africa is the world's three major treasure troves of tropical fish. The vast majority of tropical fish can only survive when the water temperature exceeds 20°C, and generally prefer a water temperature of about 26°C. The water temperature in Africa is slightly acidic and reddish. The soil in Africa is slightly acidic red soil, coupled with more humus in the surface water, the general pH value of the water is 6 to 7 slightly acidic, therefore, the tropical fish produced in Africa mostly like slightly acidic water quality. Growing in the waters of South America, most of the species also like to inhabit in the pH value of 7 in the weakly acidic water. The species growing in the waters of Southeast Asia and South Asia, including those growing in the southern waters of North America, prefer neutral water with pH 7. Flowering fishes growing in Central and South America, such as peacockfish, swordtails, morays, moonfish and other oviparous fishes, also like to live in weakly alkaline hard water. Tropical fish from Central America require slightly alkaline water for feeding because the water quality in their birthplace is slightly alkaline. In addition, some semi-marine fish such as bat pomfret, yellowfin pomfret and Oceania's colorful golden phoenix prefer weakly alkaline water. In fact, some fish like neutral or alkaline water quality, such as bat pompano, elephant trunk fish, etc., can live well in weakly acidic water quality. However, fish that like acidic water quality are generally difficult to survive in weakly alkaline water quality. China's freshwater resources are generally slightly alkaline water, but the north is more alkaline, while the water quality of some lakes, reservoirs and rivers in the south is slightly acidic. For example, the pH value of drinking water in Guangzhou and other places in the south of China is less than 7, which is the ideal water quality for breeding the colorful fairy; while the pH value of water in Beijing is about 7, which is neutral. On the other hand, the water hardness of the rivers in the rainforest belt in South China is low, mostly soft water, while the water hardness in the North is also high due to low rainfall and high salinity of the soil. In addition, generally surface water has low hardness, groundwater and well water have high hardness, while rainwater and snow water are soft water. In the southern cities of China, such as Guangzhou, Foshan, the water quality is softer, for the seven-colored fairy, red lotus lamp and other delicate fish species produced in South America, has a unique breeding conditions. Northern cities such as Beijing and Tianjin have slightly harder water, making it difficult to breed these species. Therefore, in order to successfully keep and breed tropical ornamental fish, we should first find out the place of origin of the species and learn the range of water quality factors such as pH value, hardness, water temperature and salinity, etc., which are suitable for their survival, and then test the quality of local water, which can be carried out with a commercially available simple colorimeter box, and then make adjustments artificially when some items are found to be unsuitable. In urban areas, tap water is generally used for fish farming, and this should first be neutralized by adding baking soda (sulphate), i.e. sodium thiosulphate, or vitamin C (ascorbic acid), and then tested. Add acidifier when the water is alkaline: phosphoric acid, sodium dihydrogen phosphate or place sinking wood or add activated carbon in the water filter for 24 hours, etc.. If the water quality is acidic, add alkalizer: baking soda or sodium bicarbonate, calcium carbonate material (coral sand, shell sand or powder) or silica sand, Maifan stone, and strengthen the pumping. When the water quality is too soft, you can add lime water (lime or calcium chloride). But the water quality is hard to soften is relatively difficult, can be added to the aquarium appropriate amount of rainwater, distilled water or deionized water. If you put "Mud Carbon Moss" in the aquarium or filter, it can soften the water quality and lower the pH value because it has the function of ion exchange and releases humic acid, and grass mud also has this function. In addition, the magnetizer can also soften the water, and ion exchange resin filters and reverse osmosis water treatment machine can produce different hardness of water, of which, residual chlorine, pH and hardness can be applied to a simple colorimetric test. As for salinity, it can be measured by float tube hydrometer, pointer hydrometer or refractometer. If you need to increase the salinity, you can use commercially available "artificial sea salt" to mix. After the water quality treatment, aeration will be carried out. At the same time, in order to accelerate the maturation of the new water for rearing, we can artificially inoculate microorganisms such as "Nitrifying Bacteria", "Photosynthesizing Bacteria", and "Dental Bacillus" and other microorganisms to purify the water, and then put in the new fishes after a couple of days. If the new fish is expensive, you can also first put 1 to 2 "break into the tank fish", test the water and then put the new fish is more secure.