Top Threadsail Filefish Fishing Countries

The threadsail filefish (Stephanolepis cirrhifer), also known as the thread-sail leatherjacket, is a small, laterally compressed marine fish recognized for its elongated dorsal fin filament and rough, sandpapery skin. Native to the temperate waters of the Northwest Pacific, this species is most abundant around Japan, Korea, and China, making these countries the primary hubs for threadsail filefish fishing. In Japan, where the fish is called "umihaze" or "kawahagi," it is highly valued for its delicate flavor and is a staple in both commercial and recreational fisheries. South Korea and China also maintain significant fisheries, supplying local markets and contributing to regional seafood cuisine. The threadsail filefish is typically caught using small trawls, gillnets, and sometimes by angling, with careful management in Japan to sustain healthy populations due to its popularity and economic importance.

Data from FAO. 2025. Global Capture Production. In: Fisheries and Aquaculture.