CATDOLL : CATDOLL: What are the living habits of fish?

Different fish have different living habits, take silver carp as an example.

Silver carp is a typical pelagic species. It exists in the middle and upper layers of the water body in spring, summer and autumn, and enters deep water areas after winter. As a filter-feeding fish, silver carp will use its gills to filter and select useful plankton in the water during feeding. When silver carp is in the fry stage, it mainly feeds on zooplankton in the water; after growing to about 1.5cm, it mainly feeds on phytoplankton in the water body, and prefers to eat grass carp excrement, chicken and cow feces, bean dregs powder and artificial micro-particle feed. Silver carp's food has a very obvious seasonality. In addition to plankton in spring and autumn, it also ingests a lot of rotten bait; in summer, because the water level is low, the food intake is larger than that of land; in winter, silver carp tends to eat less and move less. In summary, silver carp is suitable for breeding in fertile water. Silver carp is a fish that likes high temperatures. The most suitable temperature is 24-30℃. Silver carp has a strong appetite in summer. Therefore, the rapid growth period of silver carp in northern my country is generally concentrated in July to September. After the beginning of autumn, the appetite of silver carp will gradually decrease. Silver carp itself is lively and likes to jump, but it is clumsy. The water body where silver carp lives needs to have enough oxygen. If there is a lack of oxygen in the water, it will immediately float to the surface and die soon. But overall, the growth cycle of silver carp is shorter and the survival rate is higher. Under normal circumstances, the sexual maturity age of silver carp is 1-2 years earlier than that of grass carp. Mature individuals are also smaller. Generally, female fish weighing more than 3 kilograms can reach maturity. Spawning occurs from April to May every year, with an absolute egg carrying capacity of 200,000 to 250,000 eggs. The spawning period is similar to that of grass carp. Under pond conditions, if there is sufficient bait, the fish can grow to 500-800 grams in the same year, and the weight of a three-year-old fish can reach 3-4 kilograms. In natural rivers, it can weigh up to 30-40 kilograms.

Different types of fish have different physiological characteristics, living habits, required food and foraging patterns, spawning times, activity environments, and water layers.

1. Different water layers

Different types of fish often live and move in different water layers due to their different food needs. For example, silver carp and bighead carp mainly prey on plankton, so they often live and move in the upper layer of water bodies where there are more plankton; grass carp and bighead carp like to eat the roots, stems and leaves of aquatic plants, and often live and move in the middle and lower layers of water; carp and crucian carp mainly feed on benthic organisms, and usually live and move in the bottom layer of water; catfish and yellow catfish not only like to eat benthic animals, but are also afraid of light, so they burrow into caves during the day and only come out in large numbers on cloudy days and at night to forage at the bottom of the water.

2. Warming habits

When the temperature of natural water bodies is low, all kinds of fish like to move and forage in sunny waters. In early spring and late autumn, the shallow waters that are sheltered from the wind and facing the sun are warmer during the day under the sunshine, and fish like to swim and forage here. However, the temperature difference between morning and evening is large, and the water temperature in shallow waters also drops quickly and by a large margin, so fish move to deep waters where the water is relatively warm.

3. Migratory habits

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

The direction and distance of fish migration vary. Some fish migrate from deep sea to shallow sea, some migrate from shallow sea to deep sea, some migrate from south to north, and some migrate from north to south. Adult fish that migrate upstream live in the ocean and migrate upstream to rivers to reproduce when they reach sexual maturity. Examples include salmon, trout, shad, sturgeon, and other fish.

4. Wave-following habits

In ponds with wide water areas, large waves often form on the water surface when it is windy. The wind and waves push surface plankton and other food to accumulate in the leeward area, and these baits are blown into the water by the waves, so this area becomes a natural feeding ground for fish.

5. Clustering Behavior

Except for catfish and snakehead fish, most fish like to live in groups.

6. Oxygen-seeking and tranquility-seeking habits

In windless weather, oxygen dissolves slowly, but when the waves are big, the oxygen dissolves well, and fish will sensitively move to waters with high oxygen content. This is the main reason why fish like grass, currents, waves, and shallows. In addition, liking quietness is also one of the obvious characteristics of fish.

7. Phototropism

Light has a significant impact on the lifestyle and habits of fish. The same species of fish react differently to light in different sea areas, which is due to differences in the environment.

Habits:

The basic explanation is the characteristics developed under certain natural conditions or social environment for a long time. For example, "Preface to the Biography of Confucian Scholars in the Northern History": The descendants of the emperors and princes are used to staying in the mountains and are arrogant and leisurely. "Twenty-six Rhymes for Farewell to Li Xueshu" by Du Fu of the Tang Dynasty: When I was young, I was lazy, and I became more lazy in my later years. There is also the meaning of "cultivating only to know how to cultivate one's temperament", such as "Biography of Chang Shuang in the Northern History": Therefore, the Six Classics are the legacy of the ancient kings and the great event of the saints. How can we not relax and read them to cultivate our temperament? In Buddhism, it is also called "cultivated nature", which means the nature cultivated by previous studies.

1. A characteristic that is gradually developed in a certain environment over a long period of time

"The Preface to the Biography of Confucian Scholars in the History of the Northern Dynasties": The descendants of the emperors and princes are arrogant and unrestrained. "Twenty-six Rhymes for Li Xueshu" by Du Fu of the Tang Dynasty: I was lazy when I was young, and I became more lazy in my later years. "Letters from Two Places: To Xu Guangping" by Lu Xun: I have a bad habit and I don't believe things on the surface.

2. Cultivate your temperament

"The Biography of Chang Shuang" in the History of the Northern Dynasties: "From this point of view, the Six Classics are the legacy of the ancient kings and the great achievements of the sages. How can we not indulge in their study and practice them?"[1]

3. Buddhist terms

[Habits] Also known as habitual nature, that is, the nature cultivated through previous study.

A trait developed over a long period of time under certain conditions or environments: The descendants of emperors and princes are arrogant and extravagant.

4. Terms of happiness

Chinese happiness studies believe that animals (including humans) have a survival nature and a lazy nature. The laziness in the lazy nature refers to the nature of animals not taking one more step if they can take one less step. Laziness means that animals will continue to behave according to their original habits when not affected by external forces.

Habits are the concrete manifestation of the lazy nature of animals in daily life.

1. Fish’s life habits. General movements are conditioned reflex movements, often caused by external stimuli. Migration is the active, regular, directional, clustered, and species-specific horizontal movement of some fish. Migration is also a cyclical movement, which is repeated every year as the various stages of the fish life cycle progress. Migration is the result of fish’s long-term adaptation to changes in external environmental conditions, and it is also an inevitable response to external stimuli when the internal physiological changes of fish develop to a certain extent. Through migration, the living waters of different life periods are changed to meet the needs of living conditions in different life periods, and various important life activities in the life history are successfully completed... (Read more)

2. If you want to learn how to fish well, you must first study the habits of fish. The last point is about letting fish bite. This is also an important means for us to feel the fish in the water. There are basically two situations. After starting to make a nest, you find that the float has moved. If it is not in a fine pond or a professional competitive fish-grabbing competition, then we must not rush to catch these few bites. Let the fish bite, we must let the fish bite! First, let a few fish in the nest. The movement of the fish in the nest and the sound and inducement factors produced when eating bait will attract more fish from afar. Achieve the purpose of attracting fish with fish... (Read more)

3. Some habits of fish during the breeding season. Fish, like other vertebrates, often have a process of estrus and courtship when the male and female fish enter the spawning grounds during the reproductive season. Especially for male fish, when it approaches the female fish, it will inevitably make various courtship movements, but different species, courtship methods, and the complexity of courtship or love movements vary greatly. Some male fish only swim around the female fish during courtship and show various states of sexual excitement; some also make various complex movements similar to birds' funny marriages. But this phenomenon only occurs during the stage of male and female union, and at most lasts for the entire reproductive period... (Read more)

4. The feeding characteristics of various freshwater fish Silver carp is known as the "water filter". Proper breeding of silver carp can make full use of natural bait resources such as plankton in the water, control the fertility of the water, and thus regulate the water quality. At the same time, silver carp is also a "forecaster" of fish hypoxia and floating. When silver carp floats, it means that the water has begun to lack oxygen, and oxygenation measures should be taken in time... (Read more)