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 tawny body color and gray belly color, while herring is a carnivorous fish with dark back color 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 to the Four Big Fish

(1) Grass carp: It is a typical herbivorous fish with tawny and grayish belly, grayish yellow pectoral fins and ventral fins, and light colors of other fins.

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

(3) Silver carp: Spindle-shaped, blue-gray in back, white in sides and abdomen, impatient and good at jumping, it 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 to jump, and can adapt to relatively fertile water bodies.

Second, four big fish are suitable for single culture or mixed culture.

1, suitable culture mode

(1) The four big fish are suitable for mixed culture, 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 layer of water body, eating phytoplankton, bighead carp mainly lives in the middle and upper layer of water body, eating zooplankton, grass carp lives in the bottom layer of water body and eats aquatic plants, while herring lives in the bottom layer of 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 water quality cultivated before breeding.

(2) Put active, healthy and disease-resistant fish, grass carp with the specification of 50- 150g, 500- 1300 herring with the specification of 50-80g per mu, and 400- 1000 herring with the specification of/kloc-per mu.

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

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