1. Washing off the mucus on the fish surface helps to remove the fishy smell, but at the same time, it also washes off some umami substances.

2. The fishy smell of fish is mainly concentrated on fish scales and their attached mucus, followed by fish gills. There are relatively few fishy substances in fish, so the key to treating raw fish is to remove scales, gills and mucus.

3. cooking wine and vinegar. Because the fishy smell of fish mainly comes from organic substances with weak polarity such as trimethylamine, such substances are soluble in ethanol. Therefore, pickling with cooking wine can remove some fishy smell.

4. Onions, ginger and garlic. Onion, ginger and garlic are all propylene sulfide compounds, which belong to spicy condiment. They are commonly used deodorizing condiments in families and are called "three treasures in the kitchen".

5. Zanthoxylum bungeanum and aniseed. Zanthoxylum bungeanum and aniseed are also fragrant seasonings, which can not only increase the flavor, but also cover up part of the fishy smell.

reference source: people's daily online-several methods to remove fishy smell.