Kouseisha Kouseikaku Co., Ltd.

Kouseisha Kouseikaku Co., Ltd. (株式会社恒星社厚生閣) is a Japanese academic publishing house headquartered in Yotsuya Saneicho, Shinjuku-ku, Tokyo. The company was founded in July 1922 and has built its reputation on scholarly and specialist books, particularly in astronomy and fisheries science. Its official website describes it as a publisher that mainly issues academic specialist books in the fields of astronomy and fisheries. The publisher's catalogue is organized around several core subject areas. In astronomy, it covers astronomy and the astronomy-universe certification (天文宇宙検定), astrophysics and space physics, history of astronomy and constellations, introductory astronomy, and an Einstein series. In fisheries science, it publishes on resources and fishing, aquaculture and stock enhancement, fish diseases, a New Fisheries Science Compendium (新水産学全集), and a Fisheries Science Series (水産学シリーズ), including an e-Fisheries Science Series. Adjacent fields include oceanography and environmental science, marine biology, food science and food hygiene, sociology, sports and health (including equestrianism), and general science including philosophy of science, history of science, mathematics, and time studies. Kouseisha Kouseikaku distributes its titles through bookstores and university co-ops across Japan, through online bookstores, and directly through its own website shopping cart. It also operates a network of stockholding partner bookstores (常備協力店) listed by prefecture, and it sells electronic editions, including the Fisheries Science Series volumes 1–150 via the YONDEMILL platform. The company is a member of Japanese publishing and science-book industry associations such as the Publishing Azusakai, the Japan Natural Science Book Association, and the Japan Science Book General Catalogue Publishing Association, and it maintains links with academic societies including the Japanese Society of Fisheries Science, the Astronomical Society of Japan, and the Ichthyological Society of Japan. The company is a private corporation. Its representative director and president is Kazunari Kataoka (片岡一成). It remains active, continuing to release new titles, revised editions, and certification workbooks, and it maintains an official website and social media presence.

Kouseisha Kouseikaku Co., Ltd. was founded in July 1922 in Japan. From its early years it established itself as a publisher of scholarly and specialist literature, and over the decades it developed a distinctive identity centered on the natural sciences, especially astronomy and fisheries science. The company is headquartered in the Sanei Building in Yotsuya Saneicho, Shinjuku-ku, Tokyo. Its long-standing focus on academic publishing has allowed it to build deep catalogues in niche scientific fields. In astronomy, it has published works ranging from introductory guides to advanced astrophysics, as well as the official textbooks and workbooks for the Astronomy-Universe Certification (天文宇宙検定), a Japanese certification program for astronomy knowledge. In fisheries science, it has maintained major series such as the Fisheries Science Series (水産学シリーズ) and the New Fisheries Science Compendium (新水産学全集), covering resources and fishing, aquaculture, fish diseases, and related topics. Over time the publisher expanded into adjacent and interdisciplinary areas, including oceanography and environmental science, marine biology, food science and food hygiene, sociology, sports and health, and general science including the philosophy and history of science, mathematics, and time studies. It also adopted new formats: it offers electronic books, including through the YONDEMILL platform, and on-demand editions for titles that might otherwise be out of print. In 2022 it announced that electronic versions of the Fisheries Science Series volumes 1–150 were available on YONDEMILL. The company distributes through a wide network of bookstores and university co-ops across Japan, through online bookstores, and directly via its own website. It maintains a list of stockholding partner bookstores (常備協力店) organized by prefecture. It is a member of industry bodies such as the Publishing Azusakai, the Japan Natural Science Book Association, and the Japan Science Book General Catalogue Publishing Association, and it links to academic societies including the Japanese Society of Fisheries Science, the Astronomical Society of Japan, and the Ichthyological Society of Japan. As of the 2020s, Kouseisha Kouseikaku remains an active private publisher led by Representative Director and President Kazunari Kataoka, continuing to issue new titles, revised editions, and certification materials.

• 2026

  Support page opened for Astronomy-Universe Certification official textbooks and workbooks

• 2024

  Web appendix released for the revised edition of The Science of Comets

• 2023

  Notice of shipping fee increase

• 2022

  Electronic editions of the Fisheries Science Series (volumes 1–150) began sales on YONDEMILL

• 2017

  Announcement of the latest on-demand edition of the Fisheries Science Series

• 2016

  Announcement of the discontinuation of the email newsletter membership

• 1922

  Company founded in Japan

Academic and specialist publisher focused on astronomy and fisheries science, serving researchers, students, and certification candidates in Japan.

• Astronomy-Universe Certification official workbooks (grades 1–4, 2026–2027 edition)

• Astronomy-Universe Certification official textbooks (grades 2–4, 2025–2026 edition)

• The Science of Comets, revised edition

• Encyclopedia of Antibacterial and Antifungal Agents, new edition

• Basic Fish Physiology

• Introduction to Time Studies

• Fisheries Science Series (水産学シリーズ)

• New Fisheries Science Compendium (新水産学全集)

1. 1恒星社厚生閣 公式サイトkouseisha.com
2. 2会社情報 - 恒星社厚生閣kouseisha.com
3. 3リンク - 恒星社厚生閣kouseisha.com
4. 4ご注文方法 - 恒星社厚生閣kouseisha.com
5. 5恒星社厚生閣 - Wikipediaja.wikipedia.org
6. 6Kouseisha Kouseikaku Co.,Ltd. - Wikidatawikidata.org