Wakasagi (Pond Smelt) - Pond smelt

Japanese: ワカサギ(鰙∥公魚) - ワカサギ（英語表記）pond smelt

A fish of the genus Smelt in the family Osmeridae of the order Salmoniformes (illustration). In the San'in region, it is called Amasagi. It inhabits brackish waters and lakes from Kanto northward on the Pacific coast, and from Shimane Prefecture northward and Hokkaido southward on the Sea of Japan coast. There are purely freshwater, brackish, and anadromous species. Since the successful transplantation of artificially fertilized eggs from Hinuma, Ibaraki Prefecture, to Matsukawaura, Fukushima Prefecture in 1908, they have now been transplanted to lakes and ponds all over the country, including Lake Suwa, Lake Yamanaka, and Lake Ashi. It has the oily fins characteristic of Salmoniformes, a dark gray back, and silvery white sides, giving it a neat appearance.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

サケ目キュウリウオ科ワカサギ属の魚（イラスト）。山陰地方ではアマサギと呼ぶ。太平洋側では関東以北，日本海側では島根県以北，北海道以南の汽水域，湖沼に生息する。純淡水産，汽水性，降海性のものがある。現在は，1908年，茨城県涸沼（ひぬま）から福島県松川浦への人工授精卵の移殖が成功して以来，諏訪湖，山中湖，芦ノ湖など全国各地の湖沼に移殖されている。サケ目特有のあぶらびれがあり，背側は暗灰色，体側は銀白色を呈し清楚（せいそ）な姿である。

出典　株式会社平凡社世界大百科事典第２版について　情報

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