09/21/2020 Scientist cat Animals
Our planet is inhabited by amazing fauna, each of which has its own unique qualities. We know a lot about them: for example, koalas do not drink water at all, cats see perfectly in the dark, and dolphins have almost human intelligence. What do we know about fish, except that there are some that are edible, and some that are completely inedible and even poisonous?
In this article we will talk about the amazing inhabitants of the underwater dimension that have fins: about their life in the depths, their habits and what fish eat depending on the environment in which they live.
You will discover the unknown world of the underwater kingdom, in which not everything is as calm and peaceful as it seems at first glance. For example, fish live in reservoirs that feed on fish and small animals. There are also fish-loving birds and animals that are not averse to enjoying a freshly caught delicacy.
To each their own menu
According to the nature of their behavior and food preferences, fish are divided mainly into predatory and peaceful. Predatory fish are fish that eat fish and only occasionally eat other foods. They pose a serious threat to vegetarian fish, especially if they are small in size.
Peaceful ones, in turn, are herbivores, benthophages and planktivores. Basically, these are fish that eat algae.
Herbivores consume exclusively phytoplankton, in other words, floating algae. Benthophages are fish that feed on algae that grow at depth (they are called phytobenthos) and organic particles. Planktivores prefer zooplankton and do not disdain single-celled organisms that inhabit the river.
In addition, there are omnivorous euryphages - fish that feed on fish, algae and small invertebrates. Their menu is the most diverse.
Fish - description, fishing methods, their habits.
A bony fish of the carp family. Tench prefers to stay in quiet river bays, oxbow lakes, and channels with weak currents, overgrown with soft underwater vegetation. Feels good in lakes, large ponds, overgrown with reeds, reeds and sedges along the banks. Usually leads a solitary, sedentary lifestyle. Stays near the bottom, among thickets, avoiding bright light. It is undemanding to the concentration of oxygen in water, which allows it to live where many other species of fish cannot survive. It feeds on bottom invertebrates (insect larvae, worms, mollusks), extracting them from silt at a depth of 7-9 cm. Adult fish, in addition to animal organisms, eat aquatic plants and detritus, which can constitute up to 60% of the diet. Fishing methods: float and bottom fishing rods. The bait used is earthworms and dung worms, maggots, bloodworms, bread, porridge, legume seeds, and boilies made from meat or cheese. Groundbait with flavorings, cottage cheese.
River settlers
Looking at the river, we can’t even imagine how many different living creatures live under the water surface. Each area has its own “sets” of river fish. For example, in rivers in Russia there are such representatives as bersh, cupid, dace, ruffe, sturgeon, char, whitefish, and grayling.
Also in Russian waters you can find smelt, pike, carp, bream, and asp. In addition, there are crucian carp, minnows, silver carp, roach, rudd, tench, catfish, burbot, and river perch so beloved by anglers. And this is not a complete list of all types.
Which fish is healthier: top 7 types
The composition of sea fish meat, rich in protein and polyunsaturated fats, allows it to be included in the diet menu. Main advantages:
- Marine fillets contain fewer bones.
- Parasites are less common in marine rocks.
- Marine species are considered more healthy and are distinguished by their fat content. Fillet contains a large amount of useful substances, including omega-3 and omega-6 acids, vitamins and iodine. Eating it saturates the body with phosphorus, bromine, potassium, iron, zinc and other useful microelements.
The beneficial composition of marine fish fillets has a beneficial effect on the functioning of the cardiovascular system and improves immunity. Has a positive effect on brain activity.
Salmon varieties are considered especially valuable, but other types of sea fish are not inferior in their beneficial properties:
- Representatives of the cod family are dietary species, the fat content is about 2%.
- Species of the flounder family contain a minimum of bones, and the fillet is rich in vitamin complex.
- Meat from the mackerel group is tender and low in fat.
- Representatives of croakers resemble river fish in taste.
- The horse mackerel group is characterized by a slightly sour taste. Fat content is no more than 5%.
- Scorpionaceae, sparovaceae and notothenia species are classified as fatty varieties.
Fish protein is well absorbed by the human body. Doctors recommend including fish in your diet at least three times a week. Regular consumption helps regulate blood cholesterol levels and maintain thyroid function.
We have prepared a rating of the seven most beneficial types of fish for the body, the inclusion of which in the diet will improve your mood, raise your tone, and improve the condition of your skin and hair. In addition, regular consumption of fish in the absence of contraindications is an excellent prevention of many health problems.
Tuna
The healthiest fish is tuna.
You can find many lists of healthy fish on the Internet. And each of them contains tuna. This is a leader in the content of vitamins and nutrients. Moreover, its calorie content does not exceed 80 kcal per 100 g. Tuna meat is pure protein. It has very little fat and contains zinc, phosphorus, calcium, selenium and vitamin D. You can try the best tuna in the world in Sicily.
There are several general rules for choosing healthy fish:
- It must be marine. It is sea fish that collects all the substances the body needs, and salt water is a natural disinfectant.
- The fish should be fatty. This has a higher concentration of vitamin D and fatty acids necessary for the body.
- The fish must be small or young. There is an opinion that fish are able to absorb toxins from water and therefore, the less the fish has been in the water, the less toxins have accumulated in it.
Trout is one of the favorite types of fish
Eating fatty red fish improves the functioning of the cardiovascular system and prevents the formation of blood clots. It contains a lot of vitamins B, A and D, as well as selenium, phosphorus and folic acid. Trout has slightly less calories, but also contains sodium, potassium, calcium, manganese, magnesium, and fluorine. And, of course, Omega-3 and Omega-6 fatty acids are essential for the functioning of the heart and the body as a whole. In addition to their basic properties, they help the functioning of the endocrine system, promote proper bone formation and metabolism.
Cod
The cod is ready for steaks!
The most useful part of this fish is the liver. Cod has almost no cholesterol. Its white meat contains 19% protein and only 0.3% fat. Regular consumption of cod strengthens the immune system, improves the functioning of the nervous system and metabolism.
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Halibut
Appetizing halibut steak
Continuing our research into which fish is the healthiest, we note that halibut contains serotonin and melatonin, which maintain normal mood and regulate sleep. It is recommended for older people: if you include it in the diet on an ongoing basis, it will prevent Alzheimer's disease. The proteins contained in halibut normalize the functioning of brain cells, prevent their death and improve nutrition.
Flounder
Flounder is also a healthy and tasty fish
This cute saltwater fish is good because it contains natural aphrodisiacs. Therefore, it is also recommended to include it in the diet, especially since it is a frequent visitor to Russia. Although the leaders in the world flounder catch are European countries - Belgium and the Netherlands.
Future Christmas carp (popular Czech dish)
These are relatively fatty fish species. They contain up to 11% fat and up to 17% protein, and therefore the benefits of this fish for the body cannot be overestimated. In addition, they contain a lot of calcium and sulfur. They are useful for the beauty of the skin and nervous tissue.
Som
Do not be afraid! This is a catfish
