Complex sentence: In some Zen/Ch'an Buddhist traditions, the wooden fish serves as a signal to start and end a meditation session, and in Pure Land Buddhism, it is used to chant the name of Amitabha.
Split into simpler sentences: In some Zen/Ch'an Buddhist traditions, the wooden fish serves as a signal to start and end a meditation period. In Pure Land Buddhism, it is used when chanting the name of Amitabha.