The main difference between the Yangtze swordfish and anchovy is that the species are different, the morphological characteristics are different, and the habits are different, as follows:

One, the species are different

1, the Yangtze swordfish

Yangtze swordfish is generally referred to as the long-jawed crabs, which belongs to the order Herringaeus, family Anchovidae. It belongs to the family Herringiformes, family Anchovidae, genus Coleoptera, and species Long-jawed Coleoptera.

2, anchovy

Anchovy is commonly known as "crabs", the scientific name is "crabs", belongs to herring, anchovy, crabs, crabs species.

Two, different morphological characteristics

1, the Yangtze River cutlass fish

Long jaw crabs long and laterally flattened body, the anterior body is slightly high, backward acuminate thin, the head is larger, the kiss is short and round, the mouth is large and oblique. The body is covered with round scales, the abdomen has ribbed scales, the lateral line is not obvious, the upper pectoral fins have filiform free fins 6, the dorsal fin, anal fins, one each, the caudal fin is not developed, the upper lobe is long, the lower lobe is short, is secondary to the crooked tail type, and the small and into a sharp knife-shaped open. The body color is silvery white, and the back is generally divided into three kinds of green-gray, yellowish and green-yellow mixed.

2, anchovies

Smaller, long and sideways flat body, backward tapering, rather like a knife. The snout is short and slightly rounded, the mouth is large and inferior, the slit is oblique, the back of the body is light green, the sides of the body and the belly are silvery white, the body is covered with large and thin round scales, there is no lateral line, the six fins in front of the pectoral fins are prolonged and free and filamentous, and the anal fins are large and connected to the caudal fin.

Three, different habits

1, the Yangtze River cutlass fish

In the growth, development and fattening period, more living in the turbid waters of the sea bottom, belong to the shallow sea demersal fish, the long-jawed crabs in the ocean does not set into a large group, more dispersed in the coast and the bottom of the nearby sea, belongs to the near-bottom of the sea habitat fish. Only when it enters the vicinity of the mouth of the Yangtze River does it gradually form large groups, rising from the bottom to the middle and upper layers, mostly inhabiting turbid waters and less in clear water. It stops feeding at the mouth when it migrates for reproduction. Its distribution in the middle and lower reaches of the Yangtze River is very wide, from the mouth of the Yangtze River up to the Dongting Lake area, including the various river channels and lakes.

Part of the long-jawed crabs can enter the Qiantang River in early spring, upstream to the Tonglu area, but the number is not large, in the ocean is mainly distributed in the offshore, they not only overwinter in the bottom of the nearby waters, but also into the island shore of the shallows and bays of the wind and waves of the shallows and the foraging mouth of the overwintering and feeding.

2, anchovies

Anchovies are a migratory small fish, usually inhabiting the outer sea, every year in the late spring and early summer is a group of the sea into the river, in the middle and lower reaches of the freshwater inlet for the spawning back to the swim. China's coastal rivers and estuaries are distributed near the mouth to the Tianjin Haihe River, the Yangtze River in the middle and lower Pearl River estuary for the most.

The above content refers to? Baidu Encyclopedia - Yangtze River swordfish, Baidu Encyclopedia - Anchovy