Yaichirō Okada
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was a Japanese
zoologist Zoology ( , ) is the scientific study of animals. Its studies include the structure, embryology, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems. Zoology is one ...
. He was born in
Ishikawa Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūbu region of Honshu island. Ishikawa Prefecture has a population of 1,096,721 (1 January 2025) and has a geographic area of 4,186 Square kilometre, km2 (1,616 sq mi). Ishikawa Pr ...
. Okada studied at the Imperial Fisheries Institute (now
Tokyo University of Marine Science and Technology , abbreviated as , is a national university in Japan. The main campus (Shinagawa Campus) is located in Minato, Tokyo and another campus (Etchujima Campus) is in Kōtō, Tokyo. History The university was established in 2003 with a merger of ...
). He was a professor at Tokyo Higher Normal School (now
University of Tsukuba is a List of national universities in Japan, national research university located in Tsukuba, Ibaraki Prefecture, Ibaraki, Japan. The university has 28 college clusters and schools with around 16,500 students (as of 2014). The main Tsukuba ca ...
), and after
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
he taught at Mie University from 1950, where he was dean of Fisheries. After retirement he served as a professor at
Tokai University is a private non-sectarian higher education institution located in Tokyo, Japan. It was founded by Dr. Shigeyoshi Matsumae. It was accredited under Japan's old educational system in 1946 and under the new system in 1950. In 2008, Tokai Uni ...
. As a zoologist, has contributed in the field of fish taxonomy, as well as reptiles and amphibians. Okada's primary work in English was ''Fishes of Japan'', which published in 1955 by Maruzen and subsequently issued in revised editions.


References

20th-century Japanese zoologists Japanese mammalogists 1892 births 1976 deaths People from Ishikawa Prefecture Scientists from Ishikawa Prefecture Academic staff of the University of Tsukuba Academic staff of Tokai University {{Japan-bio-stub