Extended data
Tip of snout, big mouth, terminal position, oblique fissure, maxilla reaching below the back edge of eye. Jaws, vomeroids and flaps have fine teeth. There are fine serrations at the rear edge of the front cover, three large spines at the lower edge of the rear corner, and 1 spines at the rear end of the rear cover.
The scales are small and the lateral lines are complete and straight. The two dorsal fins are only connected at the base, 1 dorsal fin is 12 hard spine, and the second dorsal fin is 1 hard spine and113 soft fin. The back of the body is gray, and the sides and abdomen are silver gray. There are black spots on the upper body side and dorsal fin, which gradually decrease with age.
strange hobby
Perch likes to live in salty and fresh water in the estuary, and can also live in shallow water. It mainly swims in the middle and lower layers of water, and sometimes dives into the bottom for food. Fish fry feed on zooplankton, young fish feed on shrimp, and adult fish feed on fish. Sexually mature parent fish are usually 3-year-old individuals and can reach 600 mm in length. The breeding season is in late autumn, and the spawning ground is in the brackish fresh water area of the estuary.
Edible
Perch grows rapidly and has a large body, generally weighing 1.5-2.5 kg, and the largest individual can reach more than 15 kg. Its meat is delicious. Ancient poets once praised its posture and taste with the poem "People come and go on the river, but they love the beauty of habitat".
It has a high yield in coastal areas and is one of the important edible fish in the producing areas. Its meat contains protein17.5g, fat 3. 1 g, carbohydrate 0.4g, calorie 100 kcal, calcium 56mg, phosphorus 13 1 mg and iron10.2mg.
References:
Perch. Baidu baike