1. Steam the hairtail for a few minutes, then make an oblique cut on both sides of the fish head until it reaches the fish bone. Just grab the fish head and pull it out to pull out the spine.
2. A very simple way is to stew all the fish meat, put it on a filter to squeeze out the fish soup and fish meat, so that most of the fish bones can be removed.
3. If you just want to roughly remove the fish bones, you can cut off the head behind the gills of the fish when you just kill it, and use a knife to remove the backbone of the fish. This will remove larger thorns.