What are the four kinds of the four major fishes in Guangdong? Are the four major fish suitable for single culture or mixed culture?

The four major fish in Guangdong are grass carp, herring, sil

What are the four kinds of the four major fishes in Guangdong? Are the four major fish suitable for single culture or mixed culture?

The four major fish in Guangdong are grass carp, herring, silver carp and bighead carp, each of which has different life characteristics and appearance. Grass carp is a typical herbivorous fish, with yellow-brown body color and gray belly color, while herring is a carnivorous fish with dark back and inactive personality, while silver carp is spindle-shaped.

1. What are the four kinds of fish in Guangdong?

1, type

The four major fish in Guangdong are grass carp, herring, silver carp and bighead carp.

2. Introduction of four big fish

(1) Grass carp: It is a typical herbivorous fish with a yellowish brown abdomen, grayish yellow pectoral fins and ventral fins, and other fins are lighter in color.

(2) Black herring: It is a carnivorous fish, with large individual, bluish gray body color, dark back color and gray belly.

(3) Silver carp: spindle-shaped, blue-gray back, white sides and abdomen, impatient, good at jumping, is a typical filter-feeding fish.

(4) Bighead Carp: Because its head is relatively large, it is also called chubby fish, which belongs to a kind of freshwater fish. It is docile and does not like jumping, and can adapt to relatively fertile water.

Two or four kinds of fish are suitable for single culture or mixed culture.

1, a suitable breeding model.

(1) Four kinds of big fish are suitable for polyculture, because their living habits are somewhat different. After mixed culture, they can make full use of water, improve the utilization rate of bait and increase the yield.

(2) Silver carp mainly lives in the upper water body and eats phytoplankton, bighead carp mainly lives in the middle and upper water body and eats zooplankton, grass carp lives in the bottom water body and eats aquatic plants, and herring lives in the bottom water body and eats molluscs.

2. Key points of aquaculture technology

(1) Build a breeding pond in a place where irrigation and drainage are convenient and far away from pollution. The bottom of the pond should be flat, and the pond should be cleaned, disinfected and cultivated before breeding.

(2) Put active, healthy and disease-resistant fish, grass carp with the specification of 50-150g, herring with the specification of 50-80g, and herring with the specification of 100, each with 400- 1000.

(3) Feed an appropriate amount of artificial feed every day for three times within 20 days after delivery.

(4) Change the water regularly, and adjust the feeding density according to the growth of fish to ensure that there is enough space for fish to move in the pond.