Sweetfish, known scientifically as Plecoglossus altivelis, is a species of fish commonly found in the rivers and coastal waters of East Asia, particularly in Japan, Korea, and China. They are recognized for their elongated bodies and silvery scales, which help them blend into their aquatic environment. Sweetfish are anadromous, meaning they migrate from the ocean to freshwater rivers to spawn. These fish are popular in local cuisine and are often enjoyed grilled or served in soups. Sweetfish are also significant in traditional fishing practices, where they are caught using various methods, including nets and traps. Their delicate flavor and tender texture make them a sought-after delicacy in many regions.