After consuming fish and confirming that you have a fish spike in your throat, if the spike has not been removed from your throat, it is advisable to visit a hospital to have the spike removed by a doctor under a laryngoscope.
It is not recommended that patients do not seek medical attention because they are not experiencing significant discomfort for the time being. If continued eating causes the fish spike to advance into the oesophagus and gastrointestinal tract, it can easily lead to damage elsewhere and may cause serious complications.