Scombroidea are a suborder of marine fish having oily flesh, including mackerels, tunas, bonitos, albacores, and skipjacks. The flesh of these fish may contain a toxic histamine-like substance, which, if ingested, can cause what is known as scombroid poisoning. Keep in mind that scombrotoxin is formed from the action of bacteria on histidine, a normal component in the flesh of fish. Scombroid poisoning is seen when fish are inadequately preserved. Be sure that you are thoroughly familiar with preserving methods in regards to fish before storing them for consumption at a later date.