[khanar]

Ingestion of contaminated fish such as mackerel or tuna results in a surge of histamine release and symptoms like flushing, itching, and hypotension in addition to the vomiting diarrhea.

This whole scenario is called scombroid and is a buzzword to remember.

 

[Adamu2010]

Ciguatera Toxin

While Ciguatera toxin is caused by other fish types such as barracuda and red snapper and it causes neurological symptoms such as parasthesia and weakness.