This fish is huge, with a body length of up to 60 centimeters and a weight of up to 2 kilograms or more.
It has a small head with a slightly curved muzzle end and smaller, but rounded eyes.
Scales are smooth and soft in texture, but have a slight gray spore layer on the surface.
The caudal fin portion is slightly triangular, shaped like a fan, and the fins have a lot of burrs that can be flicked backward to aid in swimming.
The Bohai blackfish survives in the Bohai Sea and the surrounding waters, and is a large fish with important economic value, living mainly in deep water near the shore, with a relatively small migratory range that is greatly affected by changes in seasons and water temperature.
Particularly in winter, they move to deeper parts and may migrate to warmer waters, usually feeding on shrimp, sweetgum seeds, arthropods, and small fish.
The Bohai walleye is a protected wildlife species, as the population of this marine fish has been severely threatened over the past few decades.
In order to solve this problem, China has included this fish in the State Forestry Administration's "List of Wildlife under State Protection," implemented effective protection measures, restricted fishing, and set penalties for illegal fishing.
In addition, it has adopted a large fish marking law that allows harvesters to consciously release large fish, as well as helping the Bohai Sea to improve its marine environment, such as monitoring water quality and reducing the discharge of pollutants.