rainbow trout
Common freshwater fish, often farmed and used in cuisine.
ニジマスを釣りに行く。
I go fishing for rainbow trout.
この川に
Rainbow trout have been released into this river.
Katakana spelling is standard for this fish name.
Hiragana spelling is also seen, but katakana is more common.
Kanji spelling is uncommon; the word is usually written in kana.
Compound of 虹 (niji, 'rainbow') and 鱒 (masu, 'trout'), referring to the fish's iridescent coloration. The exact historical derivation is uncertain.