was a Japanese zoologist. He was born in

Ishikawa Prefecture is a prefecture of Japan located in the Chūbu region of Honshu island. Ishikawa Prefecture has a population of 1,140,573 (31 October 2019) and has a geographic area of 4,186 km2 (1,616 sq mi). Ishikawa Prefecture borders Toyama Prefecture to ...

. Okada studied at the Imperial Fisheries Institute (now Tokyo University of Marine Science and Technology). He was a professor at Tokyo Higher Normal School (now University of Tsukuba), and after World War II he taught at

Mie University Mie University (三重大学; ''Mie Daigaku'', abbreviated to 三重大 ''Miedai'') is a national university in Tsu, Mie Prefecture, Japan. As with other national universities, Mie University has been a National University Corporation since Apr ...

from 1950, where he was dean of Fisheries. After retirement he served as a professor at Tokai University. 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 Academic staff of the University of Tsukuba Academic staff of Tokai University {{Japan-bio-stub