Step 1: First, you need to wash the loach twice in clean water. After washing, put the loach into the basin, then sprinkle a few spoonfuls of salt into the basin and cover it to prevent the loach from jumping out. The purpose of spreading salt is to make loach spit out the sediment and mucus in his mouth, which can be better treated.

Step 2: Then gently shake the basin to make the salt evenly distributed on each loach, and then let it stand for half an hour to clean the loaches in the basin and wash away the sediment and mucus they spit out.

Step 3: clean the loach and you can start killing the loach. Misgurnus anguillicaudatus can cut off the fins of Misgurnus anguillicaudatus with scissors, and then cut them to about 2 cm in the belly.

Step 4: After the loach is cut open, you can dig out the internal organs and black gall by hand, and throw it away after digging it out.

Step 5: After the loach is treated internally, it can be washed with clear water to clean the blood inside.