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Ecology and characteristics of cutlassfish

◆What is cutlassfish?

Classification: Fish ＞ Ray-finned class ＞ Perciformes ＞ Suborder Saccharidae ＞ Trichiurinae ＞ Trichiurinae ＞ Hairtail （日本海洋データセンターより）

Scientific name: Trichiurus lepturus　Linnaeus, 1758

Japanese name: Tachiuo/Swordfish

English name: Largehead hairtail、Cutlassfish

Other names: Tachi no O, Hakuo

The Japanese name “タチウオ” refers to a species within the Tachiuo genus of the Tachiuo family. While it has been traditionally considered a single species found in subtropical and temperate waters worldwide, there are also theories suggesting that these might be distinct species.
Research in this area is still ongoing.

The name “Tachiuo” is believed to have different origins, including one theory that it comes from the appearance of the fish resembling a “太刀 (tachi),” a traditional Japanese sword, and another theory suggesting it originates from their swimming behavior, as they are known to swim vertically, resembling the action of “standing” or “立ち (tachi).”

■Fishing methods, production areas, and seasons for cutlassfish (hairtail fish)

●fishing method

cutlassfish (太刀魚), also known as “beltfish,” are often caught using bottom trawl nets and fixed nets, but they are also harvested through methods like single-line fishing and longline fishing. Those caught in nets tend to have more scars on their bodies and are generally sold at lower prices, whereas fish caught through angling methods are often cleaner in appearance, and some are even live-captured, commanding higher prices.

During the summer to autumn period, cutlassfish are a popular target for shore and pier fishing in various regions.

Source: Cutlass fish: ecology, characteristics, production area, and season

URL: タチウオ／太刀魚／立魚 : 旬の魚介百科 (foodslink.jp)

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English translation by ChatGPT.