Morphological and acoustic characteristics of two species of the genus Occidozyga Kuhn and Van hasselt, 1822 (Anura: Dicroglossidae) in Vietnam

This is the first study that describes calls from this genus in Vietnam. Five acoustics parameters were measured, including call duration (s), call repetition rate (calls/s), inter-call interval(s), number of notes or pulses in a call, dominant frequency of call (kHz).