The meaning of fish feeding habits, what is the feeding habits of fish

Hold on to it. I think that we can better breed fish for human consumption, and then better protect known fish, only by knowing what they eat, can we catch them in aquariums and other places for artificial farming, otherwise they will die, so what's the point.

Fish swim around underwater and breathe by gills for the main purpose of foraging. It is an ectothermic animal, and its body temperature changes with the water temperature, and the water temperature changes in different seasons will affect the range of activities of the fish. When the weather is hot and the air pressure is low, the fish will be anorexic.

When the water temperature becomes low, the metabolic function of the fish will slow down and they will refuse to eat. When the water temperature is right and oxygen is sufficient, the fish will be more active and will actively forage.

Extended Materials. Fishes are ectothermic aquatic vertebrates that breathe with gills, swim through the swing of the tail and trunk and the coordination of fins, and feed on the upper and lower jaws, and belong to the vertebrate subphylum of the phylum Chordates, and generally people divide vertebrates into five categories: fish, birds, reptiles, mammals, and amphibians.

According to the statistics of the late Canadian scholar Nelson in 1994, there are 24,618 species of fish in the world, accounting for more than half of the named vertebrates, and new species of fish are constantly being discovered, with an average of about 150 species per year, and more than 1,500 species should have increased in more than ten years, and there are currently about 32,100 species of named fish species in the world.

1. Fish activities have a certain regularity, generally swim to the shallow water near the shore in the morning and evening to feed, and at noon in the deep water in the center of the river and lake.

2. Most freshwater fish.

They all like warmth and fear the cold. Their active temperature is 18 -28 , and the fish have a high desire to feed during this temperature, so the fishing effect is also good.

3. Generally speaking, the most common food of fish is mainly small fish, shrimp, and plankton on the water surface.

Seeds and young leaves of various plants, insects, etc. Therefore, in general, places with a lot of these foods will become a natural gathering place for fish.

4. Generally, when night is about to fall, everything begins to become silent, and fish begin to emerge from the deep water area to the shallow water area to feed.

5. In the morning of summer, the temperature is generally 20-26, and the water temperature is between 22-30, which is the best water temperature for fish to eat, and this is the best time for fishing.

Fish live in water, most fish are oviparous, they have their own mating and breeding seasons, and many fish have fixed spawning grounds.

1. Different inhabited water layers.

Various types of fish, due to their different food needs, often inhabit and move in different water layers. For example, silver carp and bighead carp mainly prey on plankton, so they often inhabit the upper layers of water bodies with more plankton. Grass carp and bream love to eat the roots, stems and leaves of aquatic plants, and often inhabit the middle and lower layers of water. Carp and crucian carp mainly feed on benthic organisms, usually inhabiting the bottom of the water. Catfish and yellow catfish, which not only like to eat benthic animals, but are also afraid of light, burrow into burrows during the day, and only swim in large numbers on cloudy days and at night, feeding on the bottom of the water.

2. Habit of chasing warmth.

When the natural water temperature is low, all kinds of fish like to move to the sunny waters to feed. In early spring and late autumn, the shallow, leeward waters are warmer during the day and the fish like to swim and feed. The temperature difference between morning and evening is large, and the water temperature in shallow water drops quickly and drops greatly, so fish go to the deep water where the water is relatively warm.

3. Migratory habits.

The migration of fish in the water body with a certain time, range, direction and distance is called migration. The law of migration is directly related to water temperature, bait and spawning, and it is called "moderate temperature migration", "bait migration" and "spawning migration" in aquaculture.

Fish migrate in different directions and distances, from deep to shallow sea, from shallow to deep sea, from south to north, and from north to south. Anadromous adults live in the ocean, and when they reach sexual maturity, they travel back to rivers to reproduce. Such as salmon, trout, shad, sturgeon and other fish.

Juvenile migratory fish live in rivers and swim to the deep sea to breed when they mature, such as eels.

Vertical migrationMany fish have the habit of moving up and down in the water body, which is called vertical migration or vertical migration. The vertical movement time of various fish species is often fixed, with a certain rhythm within 24 hours of day and night, and the water layer reached by their vertical movement is different.

4. Wave-by-wave habits.

Ponds with wide waters often cause large waves on windy days, which push plankton and other food to accumulate in the downwind inlet, and these bait are hit by the waves, making this area a natural feeding ground for fish.

5. Cluster habits.

With the exception of catfish and blackfish, most fish prefer to live in groups.

6. Oxygenotactic and quiet habits.

Dissolved oxygen is slow in windless weather, and dissolved oxygen is good when the waves are large, and fish will be very sensitive to transfer to waters with high oxygen content. This is the main reason why fish like grass, currents, waves, and shallows. In addition, tranquility is also one of the distinctive characteristics of fish.

7. Phototaxis habits.

Light has a significant impact on the lifestyle and habits of fish. Fish of the same species respond differently to light in different sea areas due to differences in the environment.

1. Juvenile feeding habits of freshwater fish.

The feeding habits of juveniles in most crypto-vertical fish are basically the same. The fry hatched from the eggs are fed by the yolk in the yolk sac. When the juveniles start feeding, they feed on small plankton prepared for sails, soy milk, and boiled egg yolk water.

As the small fish grow, they begin to feed on large plankton, nauplii, small cladopods, and artificial baiting.

2. Carnivorous: fish that feed on fish.

Some fish take small insects, small shrimp, small fish, snail meat imitation hail, clam meat, mussel meat as the main food, most of these carnivorous fish are more ferocious fish and scaleless fish, this kind of carnivorous fish has a larger mouth, sharp teeth, and less gill rakers. Mandarin fish, catfish, sea bass, sea bass, pike, etc. are examples of such fish.

Herbivorous: mainly feeds on aquatic plants, algae, vegetables and stems and leaves of some terrestrial plants. Grass carp and Wuchang fish (bream, bream) fall into this category, and bream and bream can also feed on some aquatic plants.

Vegetarian: Some fish eat aquatic weeds or plant debris or seeds that fall into the water, and algae**, such as grass carp, silver carp, bighead carp, etc. Many fish eat grains and grains as their main food, and some also eat melons, fruits, and vegetables.

Simply put, it is the eating habits of fish.

There are several types. (1) Herbivorous fish. This type of fish feeds mainly on plants.

Such as: aquatic plants. Filiform algae as well as various other plants that grow in water.

Herbivorous fish to grass carp. Bream is the representative. Especially grass carp.

It is named after eating herbs. (2) Carnivorous fish. This type of fish is generally vigorous by nature.

Feed on catching other fish. It can even kill animals larger than its own size for food. These fish generally have teeth.

Common fish are catfish. Snakehead, mackerel, etc. (3) Plankton-eating fish This kind of fish uses slender and dense gill rakers to filter food Common foods are: cladopods, flexopods, rotifers and larvae of non-ordinary joints, in addition, plankton also includes some algae in aquatic genitals, such as: green algae, yellow algae, flat algae, diatoms, euglena, black algae, etc. Common fish species are silver carp, bighead carp, carp (4) omnivorous skin filial piety fish This kind of fish has a wide range of animal food and plant food can be accepted, such as crustacean small animals, insect larvae, worms, shellfish, plant such as rice crumbs Breadcrumbs Chestnuts Crumbs of legumes Common fish are crucian carp, carp, etc

Some clasticoreus fish, benthic fish, etc

1. Fish live in the water, distributed in the ocean and freshwater, two-thirds of the fish live in the ocean, and the rest live in freshwater.

2. Fish are aquatic animals that are smooth and spindle-shaped, streamlined, finned, and breathe with gills, but more species do not meet this definition. Some fish are extremely long, while others are extremely short; Some are flattened on the sides, some are flattened; Some fins are large or complex in shape, while others are degraded or even digested; The shape and position of the mouth, eyes, nostrils, and gill openings vary greatly.

3. Fish are mostly cold-blooded, and a very few are warm-blooded, breathing with gills and having jaws and fins. Extant fish can be divided into two main groups: cartilaginous fishes (e.g., sharks, etc.) and bony fishes (fishes with linear and wavy fins).

4. There are also some fish that show a special body shape due to adapting to the special living environment and lifestyle, such as sea dragons, sunfish, river fish, flounder, box fish, etc. Regardless of the size of the fish, it can be divided into three parts: head, trunk and tail. It is characterized by the absence of a neck.

Simply put, it is the eating habits of fish.

There are several types. (1) Herbivorous fish. This type of fish feeds mainly on plants.

Such as: aquatic plants. Filiform algae as well as various other plants that grow in water.

Herbivorous fish to grass carp. Bream is the representative. Especially grass carp.

It is named after eating herbs. (2) Carnivorous fish. This type of fish is generally vigorous by nature.

Feed on catching other fish. It can even kill animals larger than its own size for food. These fish generally have teeth.

Common fish are catfish. Snakehead, mackerel, etc. (3) Plankton-eating fish This kind of fish uses slender and dense gill rakers to filter food Common foods are: cladopods, flexopods, rotifers and nauplian larvae In addition, plankton also includes some algae in aquatic genitals such as: green algae, yellow algae, flat algae, diatoms, euglena, black algae, etc. Common fish species are silver carp, bighead carp, carp (4) omnivorous fish, this kind of fish is very wide-fed, animal food and plant food are acceptable, such as crustaceans, insect larvae, worms, shellfish, plant such as rice crumbs, bread crumbs, chestnuts Crumbs of legumes Common fish are crucian carp, carp, etc., and many fish such as:

Some clasticoreus fish, benthic fish, etc