Yellow head, black body and eight whiskers. What kind of fish?

You should be talking about Pelteobagrus fulvidraco, also known as yellow croaker.

It is a scaleless and carnivorous wild fish, which is found in the northeast of China. It mainly lives by preying on small fish and shrimp. Its larger body length can reach more than 20 centimeters and its weight is about half a catty. The small one is only a dozen centimeters and weighs two or three times. The fish's body is black or yellow with black irregular markings. This kind of fish is found not only in many rivers in the north, but also in almost all rivers in the south. However, in the south, people call it "stickleback fish". Because it has three thick and hard teeth on its back and front abdomen, it is also called three-spined fish.