Silver carp and silver carp are different in belly trace, body color, head ratio, edible taste, edible bait and fishing method. On the abdominal trace, the silver carp abdomen has a crease-like edge, while the silver carp abdomen is smooth and wrinkle-free. From the body color, silver carp is covered with white scales, while silver carp has black or yellow spots.

First, compare the differences between silver carp and silver carp.

1, the difference between silver carp and silver carp

(1) The abdomen is different: silver carp's abdomen has a creased edge, while silver carp's abdomen is smooth without creases.

(2) Different body colors: silver carp has white scales on its body surface, while silver carp has black or yellow spots on its body surface.

(3) The head is different: the head proportion of silver carp is relatively small, accounting for a quarter of the body length, while the head proportion of silver carp is relatively large, accounting for half of the body length.

(4) Edible taste: Silver carp is spiny and inconvenient to eat. Silver carp has more delicate meat and more head meat.

(5) Different foods: Silver carp likes the mixed smell of sour, sweet and smelly, while silver carp likes the mixed smell of fishy, fragrant and smelly.

(6) Different fishing methods: when fishing silver carp and silver carp, the floating fishing method is generally adopted, but when fishing silver carp, the distance between the hook and the water surface is about 40 cm, and when fishing silver carp, the distance between the hook and the water surface is about 60 cm.

2. Characteristics of silver carp

(1) Hypoxia tolerance of silver carp is poor. When there is no oxygen in the water, they will immediately surface.

(2) Silver carp has a fast growth speed and high yield, and its sexual maturity age is 1-2 years earlier than that of grass carp.

(3) Silver carp is lively and likes to jump, but not agile and clumsy.

2. What are the main points of silver carp culture technology?

1, build a fish pond

Breeding silver carp requires a large fish pond area, generally between 4-8 mu, and the water depth is more than 2 m.

Step 2 stock fry

Before stocking fry, organic fertilizer should be used for cultivation, and the concentration of organic fertilizer should not be too high; Generally, the time for stocking fry is in the summer of each year; The stocking method is divided into polyculture in Danyang River, and it is generally recommended to adopt polyculture to improve economic benefits.

3. Daily management

During silver carp culture, it is necessary to keep the pond fertile and have enough plankton for silver carp to eat. In artificial feed, the principles of timing, quality and quantity should be followed to improve the utilization rate of feed.

4. Overwintering management

Generally, in late autumn and early winter, the temperature will drop, and the activity of silver carp will also decrease accordingly. When the temperature drops to 10℃, silver carp will not eat any more. At this time, the silver carp should be taken out and raised in a deeper fish pond. Or sell all the silver carp and restock the fry in the warmer season next year.