Matsumoto, T., Matsuura, K., Hanzawa, N. (2021) A new species of nine-spined stickleback, Pungitius modestus (Gasterosteiformes, Gasterosteidae), from northern Honshu, Japan. Zootaxa 5005: 1–20. www.mapress.com 日本産淡水魚が一種増えました…