Career
Taneda is an economics graduate at Kanagawa University in Kanagawa. Taneda competed for the Japanese team in a breaststroke double at the 2008 Summer Olympics in Beijing. On the second day of the Games, Taneda missed out the semifinals by 0.08 of a second, after finishing seventeenth in the preliminary heats of the 100 m breaststroke in 1:08.45.
In her second event, 200 m breaststroke, Taneda rounded out the final in last place by nine hundredths of a second (009) behind her teammate Rie Kaneto in 2:25.23.