1. Is there a difference between silver carp and bighead carp? 1. Is there a difference between silver carp and bighead carp? Silver carp, also known as bighead carp, is the same kind of fish. 2. Differences between Silver Carp (Bighead Carp) and Silver Carp (1) Different species Silver Carp and Bighead Carp are one of the four famous fishes in China, both of which belong to the animal kingdom, Chordata, teleost, CYPRINIDAE and CYPRINIDAE. The difference between them is that bighead fish is bighead and bighead fish, while silver carp is silver carp and silver carp. (2) The body surface of silver carp and bighead carp are similar, and they are all flat-sided, but the upper part of bighead carp is gray-black, the abdomen is gray-white, and there are spots on both sides. Silver carp's sides and abdomen are white, and its back is bluish gray with no markings. (3) The fish heads of silver carp and bighead carp are bigger, but bighead carp's head is bigger and fatter, accounting for one-third of its body length. Silver carp's head is not as big as bighead carp's, and it is generally one-fourth of its body length. (4) Different foods Silver carp and bighead carp are filter-feeding fish, both of which live in the middle and upper layers of water. Bighead carp mainly feeds on zooplankton, while silver carp mainly feeds on phytoplankton. (5) The protein content of bighead carp with different contents is higher than that of silver carp, and the contents of fat and cholesterol are lower. Silver carp has higher fat content than bighead carp, and is also rich in glial protein. (6) The head of bighead fish with different delicious parts is big and plump, and the meat is white and tender, which is often used to make fish head hot pot. The belly of silver carp is plump, the fish is soft and delicate, but the thorns are many and thin.
second, the breeding method of silver carp and bighead carp 1. Preparation (1) The pond for breeding silver carp and bighead carp is large, generally 4-8 mu, and the water depth is generally 1.5-2 meters. (2) Before stocking fry, organic fertilizer should be applied, and basic fertilizer for silver carp and bighead carp should be applied appropriately to control the rotifer from entering the pond during the peak period. 2. Stocking fry (1) Generally, fry are stocked from May to June. There are two ways of polyculture in Dan Yanghe, and polyculture is generally adopted. (2) At this stage, the habits of fish are gradually different, and the requirements for the external environment are also different. Various fish can be mixed and cultivated according to their habits and adaptability to water quality, giving various fish a suitable growth environment, giving full play to the utilization rate of water and the economical use of food. Fish (3) breeding ponds are generally mixed with 2-3 species, and a little silver carp and carp can be mixed. 3. Feeding management (1) At this stage, the silver carp and bighead carp mainly feed on plankton, and the pool water should be guaranteed to have a certain fertility, and the plankton should also reach a certain number. (2) Before stocking the pond, base fertilizer should be applied, and after stocking, green manure and cooked manure should be applied, and fresh water should be injected regularly to keep the water brown and green. (3) Artificial feeding should be timed, located, qualitative and quantitative, which can improve the utilization rate of bait and reduce the feed coefficient. 4. Daily management (1) When raising silver carp and bighead carp, the pond should be patrolled once every morning, mainly to observe the water color and fish dynamics, and it is also necessary to often eliminate weeds and corrupt impurities in the pool, clean the food table and disinfect the food table and food. (2) We should do a good job of dragnet inspection, which is beneficial to fertilizer and water, and check the growth of fish and fish diseases, determine the feeding amount and the prevention and control methods of fish diseases, and do a good job in preventing escape, theft, fish diseases and enemy damage. 5. Pond merging and wintering (1) In late autumn and early winter, when the water temperature drops below 1°C, the fish will not eat again. At this time, the fish should be fished out and concentrated in a deep fish pond for wintering. (3) If you want to stop feeding in tang qian for a week, you can choose a sunny day to pull the net out of the pond, and be careful when you are in the pond, so as to avoid fish injury and water mold during the wintering. (3) The water depth of the storage pond is generally more than 2 meters, and the pond with less sludge should be chosen. Attention should be paid to prevent hypoxia and the harm of birds when freezing after merging into the pond.