According to the different digestive systems, ordinary fish can be divided into stomach fish and stomachless fish, and dragon is a fish with gastric organs and functions to secrete gastric acid, which is called stomach fish.Gastric fish can be divided into tissues, and this type of fish is usually carnivorous.
Its digestive system is mainly * the stomach acid strongly corrodes the food and converts it into the energy required by the body, so his intestinal tissue will be much shorter than that of ordinary fish without stomach, and the nutritional intake is based on animal protein.Mainly, animal protein generally has high calorie, so when the arowana has enough calories, it will not eat anymore. Therefore, the arowana has a strong stomach organ and is more sensitive to satiety, so it accumulates enough calories.For a long time, there will often be cases of refusing food.
In terms of nutritional requirements, arowanas are prey for live animals, and the situation of Asian Arowanas and arowanas is somewhat different.The average person thinks that the main food of arowanas is insects.In fact, this is misleading by DISCOVERY.It is very difficult to eat insects, it can be said that it can hardly be eaten, so it is still the main food of fish and shrimp in water. Arowana is a large fish. The large fish only need the vitamins and minerals when growing up.It will be more demanding than some small fish, and the structure of the body is different, and the relative required materials are also different.
Now its time to discuss the source of the arowana food. Wild wild arowana can be eaten almost as long as it can move the prey at the entrance. When it comes to this, many people will feel unconvinced and will say that they eat everything.Why is the main food of arowana not insects, but mainly fish and shrimp in the water?
The reason why the insects on the treetops cannot become the staple food of arowana is mainly related to the environment. The plants that grow in water and can grow near the water surface in the world are only mangroves, and the growth conditions of such plants must be in fresh sea water.Growing in the waters, there is no suitable environmental conditions for growing such exotic plants in the native rainforest of the Arowana. Only under the conditions of flooding in the flood season can the branches be brought close to the water surface and insects can be organically approached to the dragon.Fish, and this period is very short in the annual growth period of the dragon fish, and if the insects on the shore grass area will become the target of the dragon fish prey, the analysis of the dragon fishs predatory action should be able to constituteIt is not easy to let the dragon fish jump vertically. It is not easy to meet this condition, so it is not possible to make insects the staple food of dragon fish. At best, it can only be regarded as a snack!For this reason, arowana is still based on fish and shrimp in water, and only fish and shrimp in water can make the size of large fish grow rapidly.The upper-layer swim habits of arowana are not for the purpose of outreach.The habit that evolved from eating insects is instead the behavior evolved from eating small fish and shrimp.General small fish and shrimp, in their early childhood, in order to avoid the predation of various large fish from the water, they are born as soon as they are born.It will be very instinctive * to survive near the water and hide as much as possible in the haystack on the shore, so the dragonfish evolves into an upper-level swimming fish.The main reason is that the food eaten by the dragonfish is swallowed, although the dragonfish isIt is a fierce fish, but it is not like a large fish such as a fierce fish or a toothfish.It can have enough jaw force to tear other fishes, so he does not feed on big fish, but can eat.The size is the main, after analyzing the environmental factors, it is quite certain that the main food of arowana is small fish and shrimp.
Analysis of nutritional ingredients
Based on the analysis of nutrient composition, carnivorous animals need a lot of animal proteins and calcium and phosphorus to help them grow rapidly during the growth process, and insects do not have such conditions.The highest insect content is animalsSex fats and proteins, minerals are relatively scarce. In general aquaculture, our long-term research, animal fats and proteins for fish, can be accumulated in large amounts into fat, but if you want to increase body length, you need to have aA certain amount of phosphorus and calcium and other inorganic minerals are necessary, especially the appropriate amount of phosphorus, which can make the fish body have the effect of accelerating growth.In nature, predators are also food for other predators in their infancy.Arowana feeds mainly on insects, so it cannot achieve the condition of rapid growth, and it will be reduced to other predators food, even the food of arowana.Therefore, between the two years of juvenile and sub-adult stage, it is the golden period for the rapid growth of the arowana. There are suitable small fish in the environment as the prey object. In contrast, it is the key to the rapid growth of the arowana.Two views, the main food of Arowana is not insects but fish and shrimp.
The following are the various nutrients required for fish (the following information refers to the book "Fish Nutrition and Feed")
Protein is the necessary energy for growth and life support. During the process of digestion and conversion into energy, it is decomposed into amino acids before it is absorbed, and the absorbed amino acids will be synthesized into the required protein.Therefore, protein is an essential nutrient for the synthesis of protein required by animals and an important medium for amino acids.The main role of amino acids is to allow fish to produce the protein needed for growth and the energy required for exercise and restore the broken tissue protein.
The main components of carbohydrates are starch and cellulose.Food contains a suitable amount of carbohydrates can improve the efficiency of protein utilization, in other words, carbohydrates are auxiliary substances of protein.But carnivorous fish have poor carbohydrate utilization.
Lipids are an important source of energy other than proteins, and carnivorous fish have a higher availability. Lipids, also known as EFA, are important substances that can supply energy to various types of amino acids after being converted into proteins.Some fish will accumulate a large amount of lipids when food is sufficient, as the main source of protein during food shortages.In the study of lipids, the lack of linoleic acid (18: 2w6) will cause the phenomenon of hindering growth and fading of body color.This substance is lacking in fish, but it has the highest content of insects.This also explains why the dragon fish that eats cockroaches has better body color if its essence is good.3w3) will only cause hinder growth. As for other fat types, for fish, it is not as important as the above two types.Linoleic acid can be obtained from foods such as small fish and shrimp, but if linoleic acid is excessively consumed,It will cause excessive accumulation of fat but it is harmful and unfavorable to the fish body, so it is recommended not to use insects as the main food, but it can be used as a necessary side food.
4. Vitamins (Vitamins)
Vitamins are the main inducement of whether fish can be balanced and grow healthily. If some vitamins are lacking, the fish will have various levels of vitamin deficiency symptoms. The following is the lack of vitamins for arowanas (see "Fish Nutrition and Feed") A brief description of the problem:
Loss of appetite, poor motility, gastrointestinal disturbance or edema (but not ascites, but refers to gastrointestinal tissue edema hypertrophy, this situation can be found after dissecting diseased fish).
2.Vitamin C deficiency:
This type of vitamin deficiency is mainly affected by the recovery capacity of bone tissue and wounds or frequent collision bleeding. Lack of vitamin C will cause: scoliosis, anterior curvature, damage caused by collagen formation, and various physical injuries are difficult to recoverThe phenomenon.Once scoliosis occurs, the best way to deal with it is to immediately add a lot of vitamin C to the food to prevent further scoliosis.In addition, the lack of vitamin C does not make the fish only refuse to eat or exercise poorly, so most of them will be ignored.
3.Vitamin B1 deficiency:
Loss of appetite, muscle spasm (spasm before death), loss of balance, loss of distance.
4.Vitamin B2 deficiency:
Vitamin deficiency can cause turbidity of water crystals (that is, the phenomenon of cataracts), loss of appetite, and increase mortality.Therefore, cataracts generally occur. If it is not caused by hexaflagellates or other parasites, special attention should be paid to whether it is caused by vitamin B1 deficiency.This situation will not be inherited.Please pay special attention to this point for albino fish.
5.Vitamin B6 deficiency:
Lack of vitamin B6 will lead to loss of appetite, loss of exercise capacity, easy tension (nervousness), ascites, shortness of breath, and soft gills aspiration (inversion).Inverted gill fish is rare, but usually supplemented with B6 or the entire B group can improve and heal.
6.Vitamin B12 deficiency:
The lack of B12 is mainly reflected in the influence of blood structure and body color, and it causes poor resistance and is susceptible to disease infection.In terms of blood, it will cause abnormal changes in blood count and blood color protein.Red blood cells can cause tissue insufficiency or fracture, and a large number of abnormal blood cells, in other words, anemia.
7.Vitamin A deficiency (vitamins A and D are fat-soluble vitamins. Among fat-soluble vitamins, the lack of A has a greater impact. Other types of fat-soluble vitamins do not have much effect on fish).
Vitamin A deficiency manifests as a marked decrease in growth rate, whitening of body color, congestion of the eyeball and fin base, anemia, liver atrophy, etc.
8.Pantothenic acid deficiency:
Loss of appetite; the gill filaments are rod-shaped, and the secretion increases to cover the entire gill slice, causing difficulty in breathing, and the fins droop.Slow movements.
Gastrointestinal bulge with growth retardation, and after dissecting the intestine, you will find that the intestine becomes grayish white.
10.Inorganic mineral deficiency:
According to research, the lack of inorganic substances in fish causes abnormal fish elements including phosphorus, calcium, magnesium, iodine, zinc, manganese, iron, copper, selenium and cobalt.These inorganic substances, our president is a trace element, will contain these trace elements in natural water, the intake of fish is less problematic, but if you use fish like reverse osmosis or some pure water to raise fish, addThe lack of certain trace elements in the food given above will cause problems.In terms of fish, about 80% of the total calcium of the fish body is stored in the bones, and about 10% is present in the skin (containing phosphorus).It accounts for 50-60% of the bones.General water-soluble trace elements can be obtained by fish, but among all trace elements, water-soluble phosphorus fish are the least susceptible, and the effect of eating high-phosphorus bait is the best.The content of fish and other vertebrates is the highest, and the content of insects is the least or not. Especially for the fishes of the carps family, in the case of arowanas, the immediate effect of insufficient calcium and phosphorus is erosion scales, so we often see some fish, Living in the best equipment, giving endless food, but the problem of erosion or obesity is caused by the owners too much love for fish.
Deficiency of other trace elements will also have a different effect on the fish.If iron is deficient, it will cause hypopigmented anemia. In the absence of zinc, poor growth, high mortality, and inflammation of the fins and skin will occur.It can even cause cataracts.Manganese has the highest bone frontal content in the fish body. If manganese is lacking, it will cause abnormal growth of the shank of the fish body, and there will be atrophy. If it is also lack of phosphorus, it will cause bone dysplasia.Copper is mainly present in the liver of fish. If copper is lacking, it will cause weight loss.The difference between the green pepper red dragon and the blood red dragon is cobalt. Cobalt is the main component of vitamin B12. When it is lacking, it will cause the above-mentioned symptoms of B12 deficiency.The physiological role of selenium is closely related to the role of vitamin E. When the deficiency is a quasi-element, the fish will only produce muscular dysplasia, and the phenomenon of high lethality of young fish.The iodine present in the thyroid line is an indispensable and necessary substance. If lack of iodine will cause the fish to die.
If the water you use is natural water supply without artificial forced filtration, the above trace elements are almost soluble in water. For feeders using reverse osmosis, we recommend that you add trace elements to your tank every time you change the waterIn order to supplement the trace elements that are lacking after forced filtration, in addition, it is recommended that the feeders use small fish with high phosphorus content as the main food, and insects or other foods as non-staple foods to make the nutrition balanced, so that the fish can always be keptgrow healthy.For arowanas more than three years old, it is recommended that artificial bait can be trained to achieve a balanced nutrition.
to sum up:
The required nutrients of arowana should be different in each stage. The best basic food should be mainly fish with high phosphorus content, because phosphorus is the most scarce element in arowanas.Or shrimp food.For feeders who use water purification equipment or lack of trace elements in water, it is absolutely necessary to add trace elements regularly.When a fish has a chronic disease, please review whether the food is properly configured to change the eating habits of the fish.Observe whether the chronic disease has improved. Dont rush to release any drugs, because all nutritional deficiencies will not cause immediate danger.
For water quality testing, it must be fixed and frequently implemented to understand what the fish lacks?It is best to make a record after each test value, so that if the fish only has problems, it can be provided to all aquarists or related professionals to determine the cause.
If the fish has only obvious vitamin deficiencies, it can be injected into the food with comprehensive vitamins to allow the fish to get enough vitamins.
Foods high in phosphorus:
The scale is high, but relatively high in sterols, it is easy to cause a lot of body fat accumulation, only for snacks, not staple food.
The protein fat content is high, other minerals and minerals are less, phosphorus is almost absent, and it is only suitable for snacks, not suitable for staple food.
Contains gums, which helps muscle activation, but has a low phosphorus content, and a small amount is found in the bones of frogs, but it is low in fat, and has a moderate amount of calcium and appropriate animal protein.Going high can help a lot, but it is less helpful to increase body length.
Among the living foods, the vitamin group with the highest calcium content and rich in nutrients has a higher scale content than frogs, and the phosphorus content is middle to upper.
Phosphorus, vitamins and animal protein are the highest in the living body, and the amount of fat depends on the amount of fish absorption. It is suitable as the main food of arowana, and it can help the fish to grow rapidly with the appropriate environment.Arowana needs balanced nutrition-food with high scale content Arowana needs balanced nutrition-food with high scale contentColorful Phoenix Fish Price.Ingot Phoenix"s skin disease~Phoenix Fish Price)Phoenix fish practice videoHow much is a phoenix fish:Moonlight fish anal dark spots pictures@Colorful phoenix fish%Phoenix Fish Introduction,