Ishikawa Chiyomatsu (石川 千代松; January 30, 1861 – January 17, 1935) was a Japanese biologist, zoologist, evolutionary theorist, and ichthyologist at the Naples Zoological Station starting 1887. He was responsible for disseminating Darwin's ideas on evolution in Japan.
Source: “Ishikawa Chiyomatsu”, English Wikipedia (CC BY-SA 4.0), excerpt