masu means "Trout" or "Salmon" in English.
Sometimes masu doesn't mean the animal, see homonyms.

  • In Japanese, a masu fish is any fish whose name ends in masu 鱒. Literally. A good number of them are trouts, but some are Salmons.
masu is normally written with katakana, as マス.
masu written with hiragana is ます.
masu written with kanji is .
This word contains non-jouyou kanji 常用漢字.
Romaji ma su
School Level

masu may also be written as .

Homonyms & Similar Words


  • The Trout and the Salmon are alike, but one difference is that the Trout usually stays in freshwater, while the Salmon migrates to salt water.

Further Reading

Wikipedia: (Trout)