The living habits of mandarin fish

Mandarin fish is only distributed in the rivers and lakes of the eastern plain of China. It overwinters in the depths of the water in winter, swims to shallow waters in spring, goes out at night, has ferocious sex, young fish like to eat fish and shrimp, adults mainly eat fish, and stop feeding in winter. It is the favorite of many anglers. Let's take a look at the living habits of mandarin fish.

Living environment of mandarin fish

Mandarin fish are bottom fishes, living in still water and rivers, lakes and reservoirs with certain flowing water, especially in shallow lakes with abundant water plants. It generally lurks at the bottom of the water during the day, looks for food everywhere at night, has the habit of burrowing, and does not like to live in groups. The suitable water temperature for life is 15-32 ℃, and it is inactive and feeding when the water temperature is below 7 ℃.

The feeding habits of mandarin fish

Mandarin fish is a typical ferocious carnivorous fish, which feeds on small fish and shrimp for life. The newly hatched mandarin fry can prey on other fry, the mandarin fish with a body length of 0.7 cm can prey on other fish with a body length of 0.35 cm, and the mandarin fish with a body length of 31 cm can feed on crucian carp with a body length of 15 cm. Mandarin fish eat a large amount of food, usually up to 10-15% of their own weight. In the process of culturing mandarin fish, feeding bait fish has a certain selectivity, that is, the fry stage is mainly mackerel, the fry stage is crucian carp and mud carp, and the adult stage is mainly small fish that are easily available and palatable.

Growth habits of mandarin fish

Mandarin fish grow slowly in rivers. In the Yangtze River basin, the average body length of 1-year-old fish is 17.5 cm and the weight is 119 grams. 2-year-old fish 23.6 cm, 300 grams. 32.8 cm, 812 grams of 3-year-old fish. 4-year-old fish 42.5cm, 1526 grams. The growth rate is greatly accelerated under the condition of artificial culture, and the mandarin fish fry cultured in ponds or cages can meet the commercial specifications, which is equivalent to the body weight of 2-3-year-old mandarin fish naturally grown on the large water surface. Under the same artificial feeding conditions, the growth rate of Siniperca chuatsi was the fastest, followed by Siniperca chuatsi.

Breeding habits of mandarin fish

The reproductive season of mandarin fish is from mid-May to August every year, and the peak production period is in June, and the suitable water temperature is 22-30 ℃. The eggs laid by mandarin fish are drifting eggs that can adhere to aquatic plants. The male matures at the first winter age and the female at the second winter age, which belongs to the type of multiple spawning.