Fish is thermotropic. What is the most suitable temperature for common fish species? What is the effect of fish's thermotaxis on fishing?

Fish is thermotropic. What is the most suitable temperature for common fish species? What is the effect of fish's thermotaxis on fishing? Fish is a kind of warm-blooded animal, commonly known as cold-blooded animal. The difference between fish and warm-blooded animals is that it lacks the physiological function of maintaining a certain body temperature and cannot control its own body temperature independently. Its body temperature will change with the change of outside temperature. Because fish can't directly control their body temperature, but are influenced by the temperature of the external environment, they have to find a water environment suitable for their own temperature, so as to keep their body temperature moderately stable as much as possible, that is to say, fish has obvious thermotropic characteristics.

1. What is the thermotaxis of fish? Temperature is one of the key factors affecting the survival of fish. There is a direct relationship between temperature and water temperature, and there is a direct relationship between water temperature and fish body temperature, and there is little difference between the three temperatures. The thermotaxis of fish means that each species tends to stay in the water with its optimum temperature, and likes the environment with relatively stable temperature and little change.

Every kind of fish has the most suitable temperature. When the water temperature is suitable, the fish's human body functions normally, its personality is very active, its appetite is strong, and it grows and develops rapidly. When the water temperature is inappropriate, too high or too low, and exceeds the normal range, the physiological function of the fish can't work normally, and it is very inactive. When the mouth opens, it refuses to eat, and even leads to the death of the fish.

Second, the most suitable temperature for common fish species. The range of water temperature that all kinds of fish adapt to is not exactly the same, and it will be different because of different kinds of fish. So fish can be divided into three categories: cold water fish, warm water fish and subtropical fish. Common fish are usually warm-water fish. Warm-water fish species live under the standard of warm temperate waters, and most of the fish in China belong to this type, such as silver carp, grass carp, bream, carp and crucian carp.

1. Grass Carp Grass Carp is a herbivorous species, located in the middle and lower layers of water, with a wide menu, wide distribution and rapid growth and development. When the water temperature is 20-32 degrees and the water temperature is lower than 15 degrees, it is suitable to stop eating. May-September is the key fishing time.

2. Silver carp and bighead carp, a carnivorous filter fish, are in the upper and middle water. When the temperature is right, they like to hunt in groups and swing. When the temperature is low in winter, they hide in deep water for the winter. The optimum temperature is 22-32 degrees, and summer is the golden season for fishing.

3. Carp Carp is an omnivorous fish, located at the bottom of water, likes to dig mud, has both meat and vegetables, and has a wide range of recipes. When the water temperature 15-25 degrees, the appetite is strong and it is most suitable for fishing. Spring and autumn are the key fishing seasons.

4. Megalobrama amblycephala is a herbivorous fish, which is located in the middle and lower layers of water and has a wide range of recipes. When the water temperature 15-25 degrees, the appetite is strong and it is most suitable for fishing. May-September is the key fishing time.

5. Crucian carp is an omnivorous fish, located at the bottom of water, with very common recipes and strong adaptability to water temperature. 0-30 degrees Celsius, you can eat with your mouth open, and you can fish all year round. Even after the river freezes, you can go ice fishing, especially in spring and early autumn.

Thirdly, the influence of fish's thermotaxis on fishing. When fish can no longer adapt to the changed water temperature, they will swing to the surrounding waters suitable for or close to the water temperature, where they will move, live and feed. The thermotropic characteristics of fish play a very important role in determining fishing time and choosing fishing place according to weather conditions.

1. Select the fishing weather. Before you get ready for fishing in advance, check the weather forecast carefully before you decide whether you are fishing. Mainly look at two levels, one is to look at the absolute temperature of the day. The temperature is too low or too high, which is not the suitable temperature range for fishing the whole target species, and is not suitable for fishing. This level should not be difficult; The second is to look at the temperature changes and the temperature difference between day and night for several days.

If the temperature is stable in recent days and the temperature difference between day and night is small, it is very suitable for fishing. Otherwise, the temperature fluctuates greatly and the temperature difference between day and night is relatively large, which is not suitable for fishing. For example, in rainy days in summer and rainy days in winter, the overall temperature will be relatively stable, which is very suitable for fishing.

2. Find a suitable fishing spot. If the water temperature is suitable for the sea area only from the point of view of the fish's thermotaxis, there will be more fish, a good mouth and a good fishing. Let's take the thermotaxis of fish into consideration when choosing fishing spots. Spring fishing beach, summer fishing shade, autumn fishing pond, winter fishing sun, just choose the most suitable temperature fishing point in different seasons. For example, in winter fishing, fishing spots are mostly built at sunrise, downwind, deep water and scattered water plants. It is also because the temperature in this area is relatively high, which is more suitable for fishing crucian carp.

3. Change the fishing spot in time during the day, because the temperature is different in the morning, morning and afternoon. In some seasons, the temperature change is more obvious in these time ranges. Fish will move to different sea areas according to the changes of time and temperature, and fishing enthusiasts also need to change fishing spots in time.

Take the Mid-Autumn Festival as an example, the temperature is still very high in broad daylight, generally above 20 degrees. The temperature is suitable in the morning, which is suitable for fishing in shallow waters on the shore; In the morning, it is suitable for fishing second-hand houses on the east coast, because the east coast is not exposed to sunlight, which is relatively cool; In the afternoon, the coast is suitable for fishing, mainly because the sun is slowly coming out of the mountain, the coast is cool and the temperature is suitable.

That's all I have to share today. I hope to help all fishing friends! If you have a better idea, please leave a message in the comments section. Let's improve our fishing skills together. Thank you!