1, silver carp: the body is flat, the head is large and wide, and the head length is about 1/3 of the body length. The mouth is also very wide and slightly upturned. Low eye position. The gill hole is large and the gill cover is developed. The scales are thin and dense. The back is bluish black, the side is dark brown with black or yellow spots, the abdomen is gray and the fins are light gray. There is a horny abdominal ridge from the base of the ventral fin to the anus. The pectoral fin is longer, and its posterior margin exceeds the base of the pelvic fin.

2. Silver carp: The side is flat, slightly higher and the abdomen is thinner. Its body length is 2.7 ~ 3.6 times of body length, 2.8 ~ 4.9 times of head length, 5.3 ~ 9.0 times of tail stalk length and 7.7 ~1.7 times of tail stalk height. The head length is 3.0 ~ 4.7 times of the kiss length, 3.0 ~ 7.4 times of the eye diameter, 1.8 ~ 3.4 times of the eye distance and 1.7 ~ 1.9 times of the head width. The length of the tailstock is 1.0 ~ 1.8 times the height of the tailstock.

Second, different living habits.

1, silver carp: impatient, good at jumping. Living in the upper and middle layers of water. It is a typical filter-feeding fish, which mainly feeds on zooplankton such as rotifers, cladocera and copepods in the fry stage. When it grows to more than 1.5 cm, it gradually turns to eating phytoplankton, soybean milk, bean dregs powder and rice bran, and prefers to eat artificial particulate compound feed.

2. Silver carp: Silver carp inhabits the upper layer of the main stream of the river and its affiliated water bodies. Sexually active and good at jumping. It mainly feeds on phytoplankton, but it still feeds on zooplankton at the fry stage, which is a typical fish that feeds on plankton. Larvae feed on zooplankton, such as rotifers, arthropods and copepods, and may also eat granular feed in artificially fed soybean milk.

After the juvenile stage, silver carp mainly feeds on phytoplankton (algae), but also eats zooplankton, debris and bacterial aggregates. I like to fatten in the still water attached to the river, and return to the main river bed in winter or spend the winter in the depths of the lake.

Third, the species are different.

1, silver carp: CYPRINIDAE, CYPRINIDAE, silver carp.

2. Silver carp: CYPRINIDAE, CYPRINIDAE, CYPRINIDAE, CYPRINIDAE.

Refer to the above? Baidu encyclopedia-silver carp

Refer to the above? Baidu encyclopedia-silver carp