Genus Katsuwonus is a scientific name for a type of fish commonly known as bonito. It belongs to the family Scombridae and is closely related to mackerel and tuna. The word "Katsuwonus" derives from two Japanese words, "katsu" and "won", which mean "victory" and "blue", respectively. Bonito fish has other synonyms such as skipjack tuna, aku, arctic bonito, victor fish, and striped tuna. These synonyms are used interchangeably in different regions of the world, depending on the fishing industry and the culinary preferences of consumers. Regardless of the name used, this fish is treasured for its mild flavor and versatility in cooking.