kokanee salmon
A landlocked form of sockeye salmon (Oncorhynchus nerka), often found in lakes. The name ヒメマス literally means 'princess trout'.
See also: 紅鮭
You can catch kokanee salmon in lakes in Hokkaido.
The kokanee salmon is a landlocked form of sockeye salmon.
Katakana spelling is standard for this fish name.
Kanji spelling is rare; the word is usually written in kana.
Compound of 姫 (hime, 'princess') + 鱒 (masu, 'trout'), referring to its smaller size compared to other salmonids.