From 1924 to 1928, Takaishi won every international competition he attended, except when racing against Johnny Weissmuller. At the 1928 Olympics, as the leader of the Japanese swimming team, Takaishi won a silver medal in the 4 × 200 m freestyle relay and a bronze medal in the 100 m freestyle, becoming the first Asian to win an Olympic medal in swimming.[3] He finished fourth in a 400 m semifinal and thus did not advance to the final.[1]
At the 1932 Olympics in Los Angeles Takaishi served as team captain and coach for the Japanese team, which won all men's events save one. After his return to Japan, he wrote a book, Swimming in Japan, which was published in 1935.[3]
He served as general director of the Japanese national swimming team for the 1964 Summer Olympics in Tokyo, and was chairman of the Amateur Swimming Federation of Japan. Takaishi died of lung cancer at the age of 59. He was posthumously honored with induction into the International Swimming Hall of Fame in 1991.[3]