2. Then scrape the scales off the fish with the back of the knife, and be careful not to be scratched by the blade.
3. After the scales on both sides of the fish are cleaned, take out the prepared salt and apply it evenly on the fish to remove the fishy smell.
4. After applying the salt, pry open the shell of the fish gills with a kitchen knife and take out the internal fish gills.
5. After cleaning the gills, hold the fish with your hands, let its belly face up, cut the knife from the tail with scissors, and cut the fish's belly.
6. After cutting the fish belly, clean up the internal organs in the fish belly and discard them.
7. Then clean the Spanish mackerel with gills and viscera removed in clean water.
8. After cleaning, you will find that there will be a black mucosa on the inner wall of the fish belly, and you can scrape it off.
9. Then rinse the inside and outside of the fish with clear water.