Main characteristics of living environment and adaptation environment of crucian carp

1, inhabiting the lower layer of water.

Crucian carp is a kind of benthic fish, which often inhabits weedy waters and swims to the bottom with humus for food.

2. I like cleaning water and aquatic plants.

Clear water has sufficient dissolved oxygen, less impurities such as microorganisms, and the water quality is not polluted. Fish swimming in such waters have a comfortable feeling and a strong appetite. There are foods that fish like to eat in the overgrown aquatic plants. Hide them to make the fish feel safe. At the same time, aquatic plants are also natural spawning grounds for fish spawning and reproduction.

3, like warmth, afraid of heat, afraid of strong light

Crucian carp is a kind of wide-temperature fish, and the optimum temperature for crucian carp to survive is 15℃~25℃. In this temperature range, crucian carp has the strongest activity and strong appetite. In spring and autumn, crucian carp like to go swimming and foraging in shallow waters along the shore, especially in areas with dense aquatic plants. In hot summer, when the water temperature in shallow water is very high, crucian carp will dive into deep water to live, or "enjoy the cool" in the shade. In the cold winter, I swam into the deep water to avoid the cold. Crucian carp is most afraid of strong light and rarely goes into the water to bask in the sun.

4, like running water, like the wind.

Most fish like running water. This is because running water not only brings enough oxygen, but also often carries sundries that fish like to eat, and also plays a role in regulating the temperature of fish's living waters. For crucian carp, fresh water (including rising water and rainwater) injected from the outside is especially welcome, because it can provide a "godsend opportunity" for the timid and active crucian carp. Carassius auratus likes the wind and is very active when it blows.

Extended data

Habit:

(1), omnivorous

Adult crucian carp is mainly plant food. Because plant feed is rich in water, there are many edible varieties and a wide range. The stems, leaves, buds and fruits of vascular weeds are the favorite food of crucian carp, and they are also widely cultivated in Songhua River wild and ponds, with rich nutrition. Diatoms and some algae are also the food of crucian carp, as well as shrimp, earthworms, young snails, insects and so on.

(2), like clustering

I like clusters, most of which are individuals with similar body shapes and different shapes.

(3) Strong reproductive ability

The gonad of crucian carp matures earlier than other fish, so fish can lay eggs every other year, grow while laying eggs, and the spawning period is long, from spring to autumn, and a large number of eggs are laid on aquatic plants or other objects in shallow water.

(4) exuberant vitality

Crucian carp has excellent tolerance, strong vitality and is not easy to die. Even if the water environment is very bad, as long as there is water and there is no toxic pollution, it can survive and multiply.

Baidu encyclopedia-crucian carp

Baidu encyclopedia-crucian carp