Sosei (844-910), a “waka” poet and Buddhist priest who was one of the Thirty-Six Immortals of Poetry (Sanju-roku Kasen) of the Asuka, Nara and Heian periods (from 592 to 1185), penned a piece that may be paraphrased as: “The warbling of a nightingale is what I await most eagerly from the morning of New Year’s Day.”
In February 1999, the Environment Agency (the present-day Environment Ministry) shocked the nation by designating the all-too-familiar “medaka” killifish as an endangered species.