Small fish spines stuck in the throat do not necessarily disappear. Foreign bodies in the pharynx usually do not fall out on their own, but if they are not too large and are not stuck deep in the throat tissue, they may cause the fish bones to fall out and disappear. The main component of fish spines is calcium, which is similar to human bones. The human throat does not have digestive glands, so it cannot secrete gastric juice that can break down calcium like the stomach does. If left untreated, the fish spike will remain stuck in the throat and will not disappear. If the fish spike is small and penetrates the tissue shallowly, even if it is stuck in the throat, it will move with swallowing and the small spike may be transported to the stomach where it will be broken down by stomach acid. If the puncture is deeper, it is difficult to move with swallowing and most of them do not disappear on their own and need to be removed through the mouth. When a fish bone is stuck in your throat, do not swallow food such as buns. This may be effective, but it may also aggravate the condition, so it is not recommended to try and requires a visit to the hospital.