Blackfish, like other fish, has fishy threads, but compared to other fish, blackfish has a lighter fishy odor. In order to remove the fishy odor of blackfish, you can use the following methods:

1. Pre-treatment: Scale the blackfish, remove the viscera and wash it, then scrub the fish with salt and ginger, and then rinse it with water.

2. Marinade: Marinate the treated blackfish with appropriate amount of salt, cooking wine, ginger and scallion for about 20 minutes to allow it to absorb the flavor of the seasoning.

3. Cooking: Put the marinated blackfish into a pot, add water, add ginger slices, scallion segments and other seasonings, boil on high heat and then turn to low heat and cook for about 20 minutes until the fish is cooked through.

4. Bake: Cut the processed black fish into pieces, marinate with salt, cooking wine, ginger slices, scallion segments and other seasonings for about 20 minutes, then bake in the oven for about 20 minutes until the fish is cooked through.

5. Stew: Cut the processed black fish into pieces, add appropriate amount of water, ginger, scallion and other seasonings, and put it into the stew pot to stew for 1-2 hours until the fish is cooked through.

The above method can effectively remove the fishy flavor of blackfish and make it more delicious.