The first one would be the scombroidae fish family. This includes tuna and mackerels. They contain a toxic histamine generated by bacterial degradation of substances in the muscle protein. Same applies to the bluefish and mahi-mahi.The strawberry is the fruit that has histamines as is the tomato for vegetables.Unfortunately chocolate may also contain high levels of histamines.Finally, some wines and beers contain elevated levels of histamines. Red wines usually contain more than the white. Look for histamine-free labels on wines as some producers started to offer them.So if histamines are the ones producing your allergies, try and stay away of those products. Consult your doctor for advice and more information.