Ayu

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. It is a relative of the smelts and other fish in the order Osmeriformes. Native to the Palearctic ecozone, it is distributed in the northwestern Pacific Ocean along the coast of Hokkaidō in Japan southward to the Korean Peninsula, China, and Hong Kong. It is amphidromous, moving between marine and freshwater bodies. It can be found in local rivers and lakes. It is an introduced species in Taiwan.

Ayu

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. It is a relative of the smelts and other fish in the order Osmeriformes. Native to the Palearctic ecozone, it is distributed in the northwestern Pacific Ocean along the coast of Hokkaidō in Japan southward to the Korean Peninsula, China, and Hong Kong. It is amphidromous, moving between marine and freshwater bodies. It can be found in local rivers and lakes. It is an introduced species in Taiwan.