Final answer:
Scombroid and ciguatera fish poisonings are related to toxin ingestion, where histamine and ciguatoxin bioaccumulate in certain fish species, respectively.
Step-by-step explanation:
The types of fish poisoning associated with scombroid and ciguatera are due to toxin ingestion. Scombroid poisoning is caused when fish that contain high levels of histidine, such as tuna and mackerel, are improperly stored and bacteria convert histidine to histamine. Ciguatera poisoning occurs when people consume reef fish that have accumulated ciguatoxin from dinoflagellates in their food chain.