Three-armed saury, also called fried fish, is also called stickleback. Distributed in the western Pacific, China, Japan, North Korea, South Korea, the Philippines and India are all produced. In China, it is mainly distributed in the Yellow Sea, Bohai Sea and East China Sea, and the Yangtze River, Qiantang River, Yellow River, Huaihe River, Liaohe River and other coastal rivers are all distributed, with the Yangtze River basin producing high and concentrated.

The body is long, the side is flat, the front part is slightly higher, gradually tapering backwards, the head is larger, the nose and mouth are short and round, the mouth is large and oblique, and there are serrated teeth on the lower edge of the maxilla. The body is round and scaly, the abdomen has prismatic scales, and the lateral line is not obvious. There are 6 filiform free fins on the upper part of pectoral fin, and the dorsal fin and gluteal fin are 65,438+0 respectively. The caudal fin is undeveloped, the upper leaf is long and the lower leaf is short, which belongs to the secondary curved tail type and is small and open like a sharp knife.

Extended data

Living habits

The bonito distributed in China's offshore waters, during the growth, development and fattening period, mostly lives in the muddy seabed and belongs to shallow sea bottom fish. The bonito is not integrated into large groups in the ocean, but mostly scattered in the bottom of coastal and nearby waters, belonging to offshore benthic fish. Entering the vicinity of the Yangtze River estuary, large groups gradually merge, rising from the bottom to the middle and upper levels, mostly inhabiting muddy waters with less clear water.

Stop eating during reproductive migration. Widely distributed in the middle and lower reaches of the Yangtze River, from the Yangtze estuary to Dongting Lake, including rivers and lakes in Tongjiang. Some bonito can enter Qiantang River in early spring and trace back to Tonglu area, but the number is small, mainly distributed in the offshore. They not only overwinter in the bottom of the nearby sea area, but also enter the shallows and bays with less wind and waves on the island coast to feed.