Question: what is ayu in english?
Answer: The ayu (アユ, 鮎, 年魚, 香魚) or sweetfish, Plecoglossus altivelis, is a species of fish. It is the only species in the genus Plecoglossus and family Plecoglossidae. ... In reference to its typical one-year lifespan, it is also written as 年魚 ("year-fish"). Some individuals live two to three years.