Brook trout (brook trout)

Japanese: カワマス(川鱒) - カワマス（英語表記）brook trout

A fish of the genus Salvelinus (illustration) of the family Salmonidae. Native to Canada and the east coast of northern North America, it was first imported to Japan in 1901 to a fish farm in Lake Chuzenji in Nikko, and was once transplanted to fish farms, rivers, and lakes throughout the country. It was later replaced by rainbow trout farming, but it is still bred in Lake Yuno and River Yunokawa in Tochigi Prefecture and the Azusa River in Nagano Prefecture. It prefers slightly cooler water than rainbow trout. Its body is pale green-blue, with scattered crimson spots on the sides slightly smaller than the diameter of its pupil.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

サケ目サケ科イワナ属の魚（イラスト）。原産地はカナダおよび北アメリカ北部の東岸で，日本へは1901年に日光の中禅寺湖の養殖場へ初めて輸入され，一時は各地の養殖場，河川，湖に移殖された。その後，ニジマスの養殖にとってかわられたが，現在でも栃木県の湯の湖，湯の川，長野県の梓川ではまだ増殖が行われている。ニジマスよりやや冷水を好む。体は淡い緑青色であるが，体側に瞳孔径よりもやや小さい朱紅色の斑点が散在する。

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

<<: Kawamata [town] - Kawamata

>>: Kawabe [village] - Kawabe