What water do the average fish drink What do the fish in the water eat

Freshly put tap water is not good, it has to be exposed to the sun, and some nitrifying bacteria are put in before putting the fish in. It's fine to put a little salt, but not too much.

Tap water is okay, people drink it no problem, fish naturally will not have a problem. Salt can sterilize bacteria, and it can also slow down the respiration of the fish, so you can put a little bit.

Aquatic omnivores, like to eat animal bait.

Water fish is soft-shelled turtle, in the juvenile period mostly feed on insects, small shrimp and tadpoles, when they grow up, they will eat snails, clams and other mollusks, of course, they will also eat fish and shrimp, in addition to vegetables, fruits and various grains.

This animal is generally fed twice a day, once in the morning and once in the afternoon, and each feeding should be eaten within 1 hour, and the residual bait should be cleaned up in time.

1. A common food eaten by fish

There are many fish in the water, but the most common food is other small aquatic organisms, such as plankton, shrimp, crabs, fish, and so on. These foods are some of the most nutritious foods that are easy to catch.

In addition to this, some plant-based foods are also delicacies of fish, such as aquatic plants, algae, and so on. These foods not only provide nutrients, but also reduce the cholesterol level in the fish, which is very beneficial to the body.

2. Different types of fish eat different foods

Different types of fish have different food needs. For example, some carnivorous fish, such as sharks, pike, seals, etc., are mainly fed by other small fish, shrimp and other small creatures. Some herbivorous fish, such as carp, bighead carp, silver carp, etc., mainly eat aquatic plants, algae and other plants.

There are also fish that eat both, eating both small fish and shrimp and other animals, as well as aquatic plants.

3. Fish farming needs to pay attention to a balanced diet

For farmed fish, it is also important to have a nutritionally balanced diet. Because the farm environment is different from the wild environment, the feed needs to be supplemented with various trace elements and vitamins to meet the various needs of the fish in the water.

At the same time, fish at different stages also need different feeds, for example, juvenile fish need finer feed points, adult fish need feed containing protein and fat, and so on.

4. The water environment has a great impact on the diet of fish

The quality of the water environment can have a very big impact on the appetite of the fish. Some lakes, ponds and other waters with slow water flow have clearer water quality, and fish need more nutrients, and fish have a stronger appetite.

On the contrary, in some heavily polluted waters, the quality of food needed by fish may not be enough, and even harmful substances, such as heavy metals, pesticides, etc., may affect the health of fish and cause loss of appetite in Boming fish.

1. Fish that live in freshwater do not drink water for the rest of their lives. This is because of the osmotic pressure relationship. Osmotic pressure is formed by substances dissolved in water.

The more material dissolved in the water, the higher the osmotic pressure. Fish contain a lot of salts and proteins in the blood and tissue fluids, and the concentration of the solution is higher than that of the surrounding fresh water, and the osmotic pressure is also higher than that of fresh water. Since the water is from a solution with low osmotic pressure to a solution with high osmotic pressure.

As a result, the surrounding freshwater seeps into the freshwater fish from all directions. As a result, not only do these freshwater fish not have to drink water, but they also have to find ways to get the excess water out of their bodies, otherwise they will be swollen to death by the water. 2. Fish living in the sea need to drink water frequently.

Because the salt content in seawater is much higher than that in the body fluids of these fish, the osmotic pressure in seawater is also much greater than in the body of fish. Supplements: The sea desperately sucks the water in the fish, so that these fish have to drink water frequently.

But there are also fish that don't need to drink water. Sharks, for example, don't drink water. The shark is a cartilaginous fish , it does not have a gill cap, but has 5-7 cleft gills on the back of the head, the gills are in it, the shark has many capillaries on its body, which absorb oxygen directly from the water, emit carbon dioxide.

And it has to swim non-stop, and the cleft cheek can keep approaching the large amount of seawater containing fresh oxygen and breathe constantly. In fact, whether it is most marine fish to drink water, or freshwater fish and a small number of marine fish not to drink water, they are all for their own needs. If they don't meet these needs, they will definitely die of maladaptation to the environment.

The eel mainly lives in the middle and pelagic of rivers and lakes, swims quickly and moves quickly, and is a typical ferocious fish that mainly feeds on fish, and is also a large freshwater economic fish.

Guangxi Liujiang catches big eel.

The eel is a large carnivorous fish and a freshwater economic fish. It is a very strong swimmer, and often attacks and hunts other fish, and is more ferocious than the familiar carnivorous fish such as black fish and mandarin fish.

The fish is ferocious by nature, it is a carnivorous fish, it is very greedy, it does not distinguish between meat and vegetarian food, eats when it is seen, grabs it when it eats, sometimes it can swallow fish that is bigger than its mouth, and feeds on all kinds of fish (including eating black fish), which is the enemy of freshwater fish.

People eat fish and eels eat the fastest because the spines are removed.

If the fish eats the fish, the big fish eats the small fish the fastest.

Unlike humans and other mammals, fish do not need to drink water through their mouths to meet their water needs. In addition, water in fish is mainly obtained by the following ways:

1.Kidneys: The kidneys of fish are responsible for excreting excess water and waste products, while also regulating the body's water balance.

2.And gills: The fish can absorb a certain amount of water, while the gills are used to breathe and absorb oxygen from the water during respiration, and some water will also escape through the surface of the gills.

3.Food: Fish usually consume food that contains a certain amount of water, which is absorbed into the body through the digestive process.

To sum up, fish do not actively drink water, they rely on their kidneys, ** and gills, and food to obtain and maintain proper hydration. This allows fish to live in the water and adapt to the needs of the aquarium environment.