Generally onion, ginger, garlic, vinegar and so on. All of them are needed for fish stew, because each place has a different way of doing things, and the ingredients needed for fish stew are also different. But onion, ginger, garlic and vinegar can usually be used to stew fish.

Fish stew is a popular dish that is made with fish, pork and seasonings. Fish stew is rich in nutritional value and has a good taste.

Carp is commonly used for fish stew. Carp is one of the most common freshwater fish in China and is fattest between February-April and August-December.

Blackfish is also a common ingredient in fish stew. Blackfish is one of the most common freshwater fish in China. It is called raw fish in different places.

Cod is also a common ingredient in fish stew. Cod is also a type of freshwater fish and is known as fathead fish in Jiangsu, Zhejiang and Shanghai. The name comes from the fact that this fish has a very large head and is eaten all over the world mainly focusing on the head. Generally the live fish killed nowadays is used for stew. As long as the cod doesn't rot, the stew is usually very tasty and has some sweet flavor.

When stewing the fish, it is recommended to put the fish in cold water, as the food may not taste as good as the fish in cold water.