Wash Goya fish, kitchen knife and floor first.
Put the Goya fish on the floor, open the gill cover and take off the gills.
After the gill of Goya fish is removed, use a kitchen knife to cut it from the tail parallel to the fish body to the head next to the cervical vertebra of Goya fish and to the head of Goya fish. Because the fish head of Goya is too hard, it needs to be chopped with another knife.
In this way, the Goya fish is divided into two halves. Then take out all the internal organs and wash the two halves of the fish in the basin.