Refers to the third-born son in a family. Also used as a male given name, often for a third son.
See also: 三男
He is the third son, named Saburō.
Occella iburia (species of poacher)
A species of poacher fish. Usually written in katakana as サブロウ.
Saburō is a fish found in the deep sea off Hokkaido.
三郎 marks a third-born son in the same naming pattern that 次郎 uses for a second son, so the two are easily mixed up.
Standard kanji spelling for the name and the 'third son' meaning.
Katakana spelling used for the fish species; usually written in kana.
From 三 (third) and 郎 (son, young man). The fish name is likely a phonetic borrowing or coincidence.