Is it dangerous to swallow fish bones? i feel an obstruction that comes and goes.

No: Unintentional ingestion of a fishbone (fb) is a relatively common clinical problem, especially in populations where unfilleted fish is a delicacy. Fortunately, most of these FBS pass through the gastrointestinal (GI) tract without causing any serious complications. Problems arise when the ingested FBS become impacted at various sites within the GI tract. You should talk with your doctor if problem.

Don't swallow bones.: Bones are not easily digestible, but the real risk of swallowing fish bones is that they may pierce the esophagus and become stuck. It is the small bones that pose the greatest risk. It is best to remove bones before eating or to be extremely careful. If a bone sticks in your throat go to the er for evaluation.